|
| | Preview | Author(s) | Title | Type | Issue Date |
| 1 |  | Altmann, Florian ; Kuzdas, Dominik ; Murschenhofer, Dominik ; Bartlechner, Johanna ; Hametner, Christoph ; Jakubek, Stefan ; Braun, Stefan | A quasi-2D multiphase flow proton exchange membrane fuel cell model for efficient distributed cell state prediction | Article Artikel    | May-2026 |
| 2 |  | Bartlechner, Johanna ; Fuchs, Benjamin ; Kozek, Martin ; Hametner, Christoph ; Jakubek, Stefan | Spatially distributed membrane degradation in PEM fuel cells — A systematic approach for long-term simulations | Article Artikel | 21-Apr-2026 |
| 3 |  | Huber, Felix | Meshing and Postprocessing for Acoustic Topology Optimization | Presentation Vortrag | 9-Apr-2026 |
| 4 | | Luo, Likun | An Efficient Iterative Solver Strategy for 2.5D Acoustic Simulation | Presentation Vortrag | 9-Apr-2026 |
| 5 | | Hochedlinger, Sebastian ; Klausser, Robert ; Kopp, Julian ; Jakubek, Stefan ; Kozek, Martin ; Spadiut, Oliver | A distributed-parameter observer for estimating the distribution of concentrations in a tubular protein refolding reactor | Article Artikel | 15-Jan-2026 |
| 6 | | Waldschitz, Daniel ; Bartlechner, Johanna ; Karner, Eva Maria ; Spadiut, Oliver ; Jakubek, Stefan ; Kager, Julian | Addressing raw material variation: Maintaining a steady-state during cultivation by blending of lignocellulosic feed streams | Article Artikel | Dec-2025 |
| 7 |  | Huber, Felix | Real-Time Audio in Python : Introducing the asmu Package | Presentation Vortrag | 10-Nov-2025 |
| 8 | | Tubic, Aleksandar ; Gögele, Lukas ; Kozek, Martin ; Wehinger, Stefan ; Jakubek, Stefan | Introduction of the Excitation-Modulated Thermal Response Test (EM-TRT) for the improved Evaluation of Vertical Ground Heat Exchangers | Article Artikel | Nov-2025 |
| 9 |  | Fallmann, Markus ; Stanger, Lukas ; Fischer, Martin ; Kureck, Martin ; Schirrer, Alexander ; Hofmann, Rene ; Jakubek, Stefan ; Kozek, Martin | Experimental validation of mixed-integer Model Predictive Control for energy management in an industrial food processing plant | Article Artikel | Nov-2025 |
| 10 | | Köppel, Dominik ; Edjokola, Joel Mata ; Bodner, Merit ; Niroumand, Amir M. ; Zhang, Qingxin ; Lackner, Johannes ; Jakubek, Stefan ; Hametner, Christoph | Nonlinear decoupling control for highly dynamic fuel cell inlet gas conditioning | Article Artikel | 21-Oct-2025 |
| 11 | | Riedler, Thomas ; Mehl, Moriz ; Kozek, Martin ; Jakubek, Stefan | Real-time Capable Non-Uniformly Spaced MILP Unit Commitment Formulation for Units with Startup and Shutdown Trajectories | Inproceedings Konferenzbeitrag | 21-Oct-2025 |
| 12 |  | Hartner, Raphael ; Kozek, Martin ; Jakubek, Stefan | End-to-end process optimization in polymer extrusion lines using model predictive control and multi-task learning | Article Artikel | 24-Sep-2025 |
| 13 | | Gitschthaler, Arno ; Hudak, Oliver E. ; Hahn, Rainer ; Wojcik, Tomasz ; Huber, Felix ; Pahr, Dieter H. ; Fuchs, Dominik ; Stelzig, Timea ; Hitaishi, Vivek ; Kolozsvári, Szilard ; Polcik, Peter ; Riedl-Tragenreif, Helmut | Evaluating thin Pt protection coatings for Ti BPPs in PEMWE | Presentation Vortrag | 8-Sep-2025 |
| 14 | | Toth, Florian | A hybrid modelling strategy for visco-thermal effects in vibroacoustics | Presentation Vortrag | 27-Aug-2025 |
| 15 |  | Huber, Felix | Acoustic Topology Optimization in openCFS | Presentation Vortrag | 4-Jul-2025 |
| 16 |  | Luo, Likun | 2.5D FEM in Acoustics | Presentation Vortrag | 4-Jul-2025 |
| 17 | | Toth, Florian ; Scharner, Andreas ; Schirrer, Alexander ; Jakubek, Stefan | Reduced-Order and Equivalent Mechanical Models for Sloshing in Arbitrarily Shaped Containers | Preprint Preprint | 18-Jun-2025 |
| 18 | | Kravos, Andraž ; Vrlic, Martin ; Hametner, Christoph ; Jakubek, Stefan ; Katrašnik, Tomaž | Real-time capable nonlinear distributed parameter observer considering two-phase flow in PEM fuel cells | Article Artikel | 4-Jun-2025 |
| 19 | | Filkin, Vladimir ; Vetyukov, Yury ; Toth, Florian | A Fully Coupled Modelling Strategy for Non-linear Induction Heating of Steel Sheets Undergoing Large Deformations | Presentation Vortrag | 28-May-2025 |
| 20 | | Grujic, Marko ; Schoefbeck, Rosmarie ; Thamsen, Bente ; Aigner, Philipp ; Röhrich, Michael ; Jakubek, Stefan ; Zimpfer, Daniel ; Granegger, Marcus | Impeller Position in a Magnetically Levitated Rotodynamic Blood Pump and Its Impact on In-Silico Hemocompatibility | Article Artikel | 3-Apr-2025 |
| 21 | | Fuchs, Benjamin ; Altmann, Florian ; Vrlić, Martin ; Braun, Stefan ; Kozek, Martin ; Hametner, Christoph ; Jakubek, Stefan | Nonlinear distributed-parameter observer design for efficient estimation of internal temperature profiles in polymer electrolyte membrane fuel cells | Article Artikel | 2-Apr-2025 |
| 22 | | Altmann, Florian ; Kuzdas, Dominik ; Murschenhofer, Dominik ; Bartlechner, Johanna ; Hametner, Christoph ; Jakubek, Stefan ; Braun, Stefan | A numerically highly efficient dynamic quasi-2D PEMFC model including non-isothermal and phase change processes | Inproceedings Konferenzbeitrag | 10-Mar-2025 |
| 23 |  | Huber, Felix Robert ; Toth, Florian | MEMS measurement microphone compatible to P48 amplifiers | Article Artikel | Mar-2025 |
| 24 |  | Kofler, Sandro ; Rammer, Georg ; Schnabel, Alexander ; Weingrill, David ; Bardosch, Peter ; Jakubek, Stefan ; Hametner, Christoph | Real-vehicle experimental validation of a predictive energy management strategy for fuel cell vehicles | Article Artikel | 15-Feb-2025 |
| 25 | | Kapilavai, Sai Krishna Venkata Aditya ; Nawratil, Georg | Architecture Singularity Distance Computations for Linear Pentapods | Article Artikel | Feb-2025 |
| 26 |  | Filkin, Vladimir ; Vetyukov, Yury ; Toth, Florian | Analytical model of induction heating buckling of a beam | Article Artikel | 2025 |
| 27 |  | Lösch, Maximilian ; Jakubek, Stefan ; Kozek, Martin | Experimental Evaluation of a 2DOF Controller for a Novel Multi-Temperature Transport System | Article Artikel | 2025 |
| 28 |  | Huber, Felix ; Toth, Florian | Low-Cost Acoustic Measurments by Calibration of Consumer Grade Hardware | Inproceedings Konferenzbeitrag | 2025 |
| 29 |  | Bartlechner, Johanna ; Hametner, Christoph ; Jakubek, Stefan | Health-conscious MPC for PEM fuel cells considering main degradation mechanisms of cathode catalyst | Inproceedings Konferenzbeitrag | 2025 |
| 30 | | Gebrekidan, Semere Birhane ; Maeder, Marcus ; Toth, Florian ; Marburg, Steffen | Vibroacoustic Metamaterial Design via Deep Reinforcement Learning | Inproceedings Konferenzbeitrag | 2025 |
| 31 | | Hassanpour Guilvaiee, Hamideh ; Mousavi, Abbas ; Berggren, Martin ; Wadbro, Eddie ; Kaltenbacher, Manfred ; Toth, Florian | Transient study of an optimized waveguide sonic black hole with wave focusing properties | Article Artikel | 2025 |
| 32 |  | Huber, Felix ; Gebrekidan, Semere Birhane ; Lösch, Maximilian ; Toth, Florian | Using Burst Excitation to obtain Acoustic Material Properties in Impedance Tubes | Inproceedings Konferenzbeitrag | 2025 |
| 33 |  | Toth, Florian ; Scharner, Andreas ; Schirrer, Alexander ; Hametner, Christoph ; Jakubek, Stefan | Rapid sloshing-free transport of liquids in arbitrarily shaped containers | Article Artikel | Dec-2024 |
| 34 | | Köppel, Dominik ; Markler, Christoph ; Jakubek, Stefan ; Hametner, Christoph | Highly Dynamic & Decoupling Fuel Cell Testbed Control | Presentation Vortrag | 14-Nov-2024 |
| 35 | | Rothenbuchner, L. ; Neudorfer, C. ; Fallmann, Markus ; Toth, Florian ; Schirrer, Alexander ; Hametner, Christoph ; Jakubek, Stefan | Efficient feedforward sloshing suppression strategy for liquid transport | Article Artikel | 10-Nov-2024 |
| 36 |  | Gratzer, Alexander Lukas ; Broger, Maximilian M. ; Schirrer, Alexander ; Jakubek, Stefan | Two-Layer MPC Architecture for Efficient Mixed-Integer-Informed Obstacle Avoidance in Real-Time | Article Artikel | Oct-2024 |
| 37 | | Klimon, Lorenz Felix Andreas ; Ebner, Bernhard ; Toth, Florian ; Edelmann, Johannes | Development of a new magnetic equivalent circuit model for motion induced eddy currents | Presentation Vortrag | 17-Sep-2024 |
| 38 | | Toth, Florian ; Ganapathy, Arun Prakash | Vibroacoustic Coupling Including Viscous Boundary Layers | Presentation Vortrag | 5-Jun-2024 |
| 39 |  | Kapilavai, Sai Krishna Venkata Aditya ; Nawratil, Georg | Singularity distance computations for 3-RPR manipulators using intrinsic metrics | Article Artikel | Jun-2024 |
| 40 |  | Kapilavai, Sai Krishna Venkata Aditya ; Nawratil, Georg | Singularity distance computations for 3-RPR manipulators using extrinsic metrics | Article Artikel | May-2024 |
| 41 |  | Huber, Felix Robert ; Kraxberger, Florian ; Toth, Florian | Multi microphone extension of impedance tube systems | Presentation Vortrag | Mar-2024 |
| 42 | | Bartlechner, Johanna ; Jakubek, Stefan ; Hametner, Christoph | PEM FUEL CELLS - Observing degradation during dynamic operation | Presentation Vortrag | 21-Feb-2024 |
| 43 | | Kofler, Sandro ; Jakubek, Stefan ; Hametner, Christoph | Cost-To-Go-Based Predictive Equivalent Consumption Minimization Strategy for Fuel Cell Vehicles Considering Route Information | Inproceedings Konferenzbeitrag | 2024 |
| 44 | | Bartlechner, Johanna ; Jakubek, Stefan ; Hametner, Christoph | PEM Fuel Cells – Assessing degradation during dynamic operation | Inproceedings Konferenzbeitrag | 2024 |
| 45 | | Bender, Moritz ; Escher, Johanna ; Messner, Barbara ; Röhrich, Michael ; Fischer, Michael Bernhard ; Hametner, Christoph ; Laufer, Günther ; Kertzscher, Ulrich ; Zimpfer, Daniel ; Jakubek, Stefan ; Granegger, Marcus | An Atraumatic Mock Loop for Realistic Hemocompatibility Assessment of Blood Pumps | Article Artikel | 22-Dec-2023 |
| 46 | | He, Xiangyu ; Bender, Moritz ; Gross, Christoph ; Narayanaswamy, Krishnaraj ; Laufer, Günther ; Jakubek, Stefan ; Bonderman, Diana ; Roehrich, Michael ; Karner, Barbara ; Zimpfer, Daniel ; Granegger, Marcus | Left Atrial Decompression With the HeartMate3 in Heart Failure With Preserved Ejection Fraction: Virtual Fitting and Hemodynamic Analysis | Article Artikel | 13-Oct-2023 |
| 47 | | Neumann, Manfred | Visualization of acoustic levitation | Presentation Vortrag | 3-Oct-2023 |
| 48 | | Filkin, Vladimir ; Vetyukov, Yury ; Heinrich, Ben ; Toth, Florian | Modelling the post‐buckling behaviour of steel sheets under induction heating | Article Artikel | Oct-2023 |
| 49 | | Rothenbuchner, Lukas ; Neudorfer, Christoph ; Fallmann, Markus ; Toth, Florian ; Schirrer, Alexander ; Hametner, Christoph ; Jakubek, Stefan | Efficient feedforward sloshing suppression strategy for liquid transport | Preprint Preprint | 30-Sep-2023 |
| 50 | | Bartlechner, Johanna ; Vrlic, Martin ; Hametner, Christoph ; Jakubek, Stefan | Real-time estimation of degradation in PEM fuel cells | Inproceedings Konferenzbeitrag | 15-Sep-2023 |
| 51 | | Filkin, Vladimir ; Vetyukov, Yury ; Toth, Florian | Effect of high deformations on the induction heating of thin steel sheets | Presentation Vortrag | 6-Jun-2023 |
| 52 | | Scharner, Andreas ; Strondl, Manuel | New features from FEST v4 Eigensolver | Presentation Vortrag | 24-Feb-2023 |
| 53 | | Strondl, Manuel | Model Order Reduction for Open Domain Problems | Presentation Vortrag | 23-Feb-2023 |
| 54 | | Czwielong, Felix ; Floss, Sebastian ; Maurerlehner, Paul ; Toth, Florian ; Kaltenbacher, Manfred ; Becker, Stefan ; Schoder, Stefan | Mikroperforierte Schallabsorber für die Anwendung in strömungsakustischen Problemstellungen | Article Artikel | 1-Feb-2023 |
| 55 | | Heinz, Johannes ; Munch, Peter ; Kaltenbacher, Manfred | High‐Order Non‐Conforming Discontinuous Galerkin Methods for the Acoustic Conservation Equations | Article Artikel | 2-Jan-2023 |
| 56 | | Toth, Florian ; Luo, Likun | A model order reduction technique for the linearised compressible flow equations | Article Artikel | 2023 |
| 57 | | Kapilavai, Sai Krishna Venkata Aditya ; Nawratil, Georg | Singularity Distance Computation for Parallel Manipulators of Stewart-Gough Type | Inproceedings Konferenzbeitrag | 2023 |
| 58 | | Toth, Florian ; Strondl, Manuel | Computational model order reduction for systems with radiation damping | Inproceedings Konferenzbeitrag | 2023 |
| 59 | | Johannes Heinz ; Niklas Fehn ; Kaltenbacher, Manfred | High-Order Discontinuous Galerkin Methods for the Acoustic Conservation Equations on Moving Meshes | Inproceedings Konferenzbeitrag | 2023 |
| 60 | | Kraxberger, Florian ; Museljic, Eniz ; Kurz, Eric ; Toth, Florian ; Kaltenbacher, Manfred ; Schoder, Stefan | The Nonlinear Eigenfrequency Problem of Room Acoustics with Porous Edge Absorbers | Inproceedings Konferenzbeitrag | 2023 |
| 61 |  | Hassanpour Guilvaiee, Hamideh ; Heyes, Paul ; Novotny, Christian ; Kaltenbacher, Manfred ; Toth, Florian | A validated modeling strategy for piezoelectric MEMS loudspeakers including viscous effects | Article Artikel | 2023 |
| 62 | | Toth, Florian | Solving eigenvalue problems with openCFS | Presentation Vortrag | 15-Dec-2022 |
| 63 |  | Heinz, Johannes ; Munch, Peter ; Kaltenbacher, Manfred | High-Order Non-Conforming Discontinuous Galerkin Methods for the Acoustic Conservation Equations | Preprint Preprint | 14-Oct-2022 |
| 64 | | Engelmann, Rafael ; Toth, Florian ; Gabriel, Christoph ; Kaltenbacher, Manfred | An approach for modal coupling based on experimental and computed modes using non-conforming grids | Article Artikel | 15-Sep-2022 |
| 65 |  | Poks, Agnes ; Luchini, Elisabeth ; Fallmann, Markus ; Signor, Camillo ; Wurzinger, Andreas ; Radler, Dominik ; Jakubek, Stefan ; Kozek, Martin | Distributed hierarchical control for multiple refrigeration units | Article Artikel | 1-Aug-2022 |
| 66 | | Toth, Florian ; Hassanpour Guilvaiee, Hamideh | Modeling viscous and thermal effects in acoustic actuators | Inproceedings Konferenzbeitrag | 2022 |
| 67 | | Gratzer, Alexander L. ; Schirrer, Alexander ; Thonhofer, Elvira ; Pasic, Faruk ; Jakubek, Stefan ; Mecklenbräuker, Christoph | Short-Term Collision Estimation by Stochastic Predictions in Multi-Agent Intersection Traffic | Inproceedings Konferenzbeitrag | 2022 |
| 68 | | Engelmann, Rafael ; Gabriel, Christoph ; Toth, Florian ; Kaltenbacher, Manfred | Assessing Low Frequency Flow Noise Based on an Experimentally Validated Modal Substructuring Strategy Featuring Non-Conforming Grids | Inproceedings Konferenzbeitrag | 2022 |
| 69 | | Heinz, Johannes ; Kaltenbacher, Manfred | A non-conforming and overlapping DG formulation for the acoustic conservation equations | Inproceedings Konferenzbeitrag | 2022 |
| 70 | | João R. Cardenuto ; Heinz, Johannes ; Thijs van Putten ; Kaltenbacher, Manfred ; Wim Desmet | Source Directivity for Auralization Using Precomputed Data Based on Discontinuous Galerkin Simulations | Inproceedings Konferenzbeitrag | 2022 |
| 71 | | Johannes Heinz ; Manfred Kaltenbacher | A nonconforming DG formulation for the acoustic conservation laws | Inproceedings Konferenzbeitrag | 2022 |
| 72 |  | Gombots, Stefan ; Nowak, Jonathan Jakob ; Kaltenbacher, Manfred | Sound source localization – state of the art and new inverse scheme | Article Artikel | Jun-2021 |
| 73 |  | Floss, Sebastian ; Czwielong, Felix ; Becker, Stefan ; Kaltenbacher, Manfred | Micro-perforated panels for noise reduction | Article Artikel | Jun-2021 |
| 74 |  | Toth, Florian ; Hassanpour Guilvaiee, Hamideh ; Jank, Georg | Acoustics on small scales : Modelling viscous effects in MEMS devices | Article Artikel | Jun-2021 |
| 75 | | Kaltenbacher, Manfred ; Heinz, Johannes ; Roppert, Klaus ; Stefan Schoder | Flexible Discretization for Computational Aeroacoustics | Inproceedings Konferenzbeitrag | 11-Mar-2021 |
| 76 |  | Böhler, Lukas ; Fallmann, Markus ; Görtler, Gregor ; Krail, Jürgen ; Schittl, Florian ; Kozek, Martin | Emission limited model predictive control of a small-scale biomass furnace | Article Artikel | 1-Mar-2021 |
| 77 | | Toth, Florian ; Hassanpour Guilvaiee, Hamideh ; Kaltenbacher, Manfred | Coupling Flexible Structure and Viscous, Compressible Fluid: A Case for Model Order Reduction | Konferenzbeitrag Inproceedings | 2021 |
| 78 | | Floss, Sebastian ; Czwielong, Felix ; Kaltenbacher, Manfred ; Becker, Stefan | Design of an in-duct micro-perforated panel absorber for axial fan noise attenuation | Artikel Article | 2021 |
| 79 |  | Böhler, Lukas ; Krail, Jürgen ; Görtler, Gregor ; Kozek, Martin | Fuzzy model predictive control for small-scale biomass combustion furnaces | Article Artikel | 15-Oct-2020 |
| 80 | | Schneider, Michael ; Dorfmeister, Manuel ; Moll, Philipp ; Kaltenbacher, Manfred ; Schmid, Ulrich | Bi-Stable Aluminum Nitride-Based Piezoelectric Micromachined Ultrasonic Transducer (PMUT) | Artikel Article | 2020 |
| 81 | | Seebacher, Philipp ; Kaltenbacher, Manfred ; Wein, Fabian ; Lehmann, Henry ; Jörgl, Volker | Topology-optimization of an actuator in motion | Konferenzbeitrag Inproceedings | 2020 |
| 82 | | Mayrhofer, Dominik ; Kaltenbacher, Manfred | A New Method of Digital Sound Reconstruction | Konferenzbeitrag Inproceedings | 2020 |
| 83 | | Seebacher, Philipp ; Kaltenbacher, Manfred ; Wein, Fabian ; Lehmann, Henry | A pseudo density topology optimization approach in nonlinear electromagnetism applied to a 3D actuator | Bericht Report | 2020 |
| 84 | | Roppert, K. ; Toth, F. ; Kaltenbacher, M. | Modelling Nonlinear Steady State Induction Heating Processes | Artikel Article | 2020 |
| 85 | | Schoder, Stefan ; Weitz, Michael ; Maurerlehner, Paul ; Hauser, Alexander ; Falk, Sebastian ; Kniesburges, Stefan ; Döllinger, Michael ; Kaltenbacher, Manfred | Hybrid aeroacoustic approach for the efficient numerical simulation of human phonation | Artikel Article | 2020 |
| 86 | | Roppert, K. ; Schoder, S. ; Toth, F. ; Kaltenbacher, M. | Non-Conforming Nitsche Interfaces for Edge Elements in curl-curl Type Problems | Artikel Article | 2020 |
| 87 | | Schoder, Stefan ; Kaltenbacher, Manfred | Hybrid Aeroacoustic Computations: State of Art and New Achievements | Artikel Article | 2020 |
| 88 | | Schoder, Stefan ; Roppert, Klaus ; Weitz, Michael ; Junger, Clemens ; Kaltenbacher, Manfred | Aeroacoustic source term computation based on radial basis functions | Artikel Article | 2020 |
| 89 | | Czwielong, Felix ; Floss, Sebastian ; Kaltenbacher, Manfred ; Becker, Stefan | Influence of a micro-perforated duct absorber on sound emission and performance of axial fans | Artikel Article | 2020 |
| 90 | | Weitz, Michael ; Schoder, Stefan ; Kaltenbacher, Manfred | Numerical investigation of the resonance behavior of flow-excited Helmholtz resonators | Artikel Article | Nov-2019 |
| 91 | | Schoder, Stefan ; Freidhager, Clemens ; Kaltenbacher, Manfred | Helmholtz decomposition of compressible flow data at Mach 0.8 | Artikel Article | Nov-2019 |
| 92 | | Roppert, Klaus ; Toth, Florian ; Kaltenbacher, Manfred | Coupling Nonlinear Magneto-Thermal Problems in Frequency Domain with the Mechanical Field | Artikel Article | Nov-2019 |
| 93 | | Toth, Florian ; Kaltenbacher, Manfred | Steady state dynamics of pre-stressed, piezoelectrically excited circular plates -- a harmonic balance approach | Artikel Article | Nov-2019 |
| 94 | | Schoder, S. ; Toth, F. ; Freidhager, C. ; Kaltenbacher, M. | Revisiting infinite mapping layer for open domain problems | Artikel Article | 2019 |
| 95 | | Roppert, Klaus ; Toth, Florian ; Kaltenbacher, Manfred | Using harmonic balancing to simulate induction heating processes | Präsentation Presentation | 2019 |
| 96 | | Kaltenbacher, Manfred ; Toth, Florian ; Hassanpour Guilvaiee, Hamideh | Advanced finite element formulation for viscothermal acoustics | Präsentation Presentation | 2019 |
| 97 | | Seebacher, Philipp ; Kaltenbacher, Manfred ; Wein, Fabian ; Lehmann, Henry | Nonlinear Topology-Optimization in Electromagnetism | Präsentation Presentation | 2019 |
| 98 | | Wein, Fabian ; Seebacher, Philipp ; Angermeier, Katharina ; Rosskopf, Andreas ; Kaltenbacher, Manfred | Topology optimization of electromagnetic devices | Präsentation Presentation | 2019 |
| 99 | | Schoder, Stefan | Strömungsakustische Analogien basierend auf kompressiblen Strömungsdaten | Präsentation Presentation | 2019 |
| 100 | | Schoder, Stefan ; Freidhager, Clemens ; Heinisch, Martin ; Kaltenbacher, Manfred | Aeroakustik von Turboladern im Automobilbereich | Präsentation Presentation | 2019 |
