Sterba, J. H., Blaauw, M., Steinhauser, G., Bichler, M., Grass, F., & Westphal, G. P. (2008). Accelerating k₀. Journal of Radioanalytical and Nuclear Chemistry, 278(3), 613–616. https://doi.org/10.1007/s10967-008-1202-9 ( reposiTUm)

Westphal, G. P., & Lemmel, H. (2008). The perfection of loss-free counting. Journal of Radioanalytical and Nuclear Chemistry, 276(3), 601–607. https://doi.org/10.1007/s10967-008-0606-x ( reposiTUm)

Grass, F., Westphal, G. P., Lemmel, H., & Sterba, J. H. (2007). Rhodium in car exhaust tips by total automatic activation analysis. Journal of Radioanalytical and Nuclear Chemistry, 271(2), 503–506. http://hdl.handle.net/20.500.12708/169009 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., Sterba, J., Schröder, P., & Bloch, Ch. (2007). Automatic activation analysis. Journal of Radioanalytical and Nuclear Chemistry, 271(1), 145–150. https://doi.org/10.1007/s10967-007-0120-6 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., & Sterba, J. (2007). A low-cost system for rapid automatic neutron activation analysis at small research reactors. Journal of Radioanalytical and Nuclear Chemistry, 272(2), 267–271. https://doi.org/10.1007/s10967-007-0513-6 ( reposiTUm)

Grass, F., Westphal, G. P., Lemmel, H., & Sterba, J. (2007). Rhodium in car exhaust tips by total automatic activation analysis. Journal of Radioanalytical and Nuclear Chemistry, 271(2), 503–506. https://doi.org/10.1007/s10967-007-0237-7 ( reposiTUm)

Pahlke, S., Meirer, F., Wobrauschek, P., Streli, C., Westphal, G. P., & Mantler, M. (2006). Adaptation of a commercial total reflection X-ray fluorescence system for wafer surface analysis equipped with a new generation of silicon drift detector. Spectrochimica Acta Part B: Atomic Spectroscopy, 61, 1110–1114. http://hdl.handle.net/20.500.12708/172702 ( reposiTUm)

Westphal, G. P., Lemmel, H., Grass, F., De Regge, P. P., Burns, K., & Markowicz, A. (2005). A neutron activation analyzer. Journal of Radioanalytical and Nuclear Chemistry, 263(3), 703–709. http://hdl.handle.net/20.500.12708/174218 ( reposiTUm)

Nesvizhevsky, V. V., Petukhov, A. K., Börner, H. G., Baranova, T. A., Gagarski, A. M., Petrov, G. A., Protasov, K. V., Yu Voronin, A., Baeßler, S., Abele, H., Westphal, A., & Lucovac, L. (2005). Study of the neutron quantum states in the gravity field. The European Physical Journal C, 40(4), 479–491. https://doi.org/10.1140/epjc/s2005-02135-y ( reposiTUm)

Nesvizhevsky, V. V., Börner, H., Gagarski, A., Petukhov, A., Petrov, P. G., Abele, H., Baessler, S., Divkovic, G., Rueß, F., Stoeferle, T., Westphal, G. P., Strelkov, A., Protasov, K. V., & Voronin, A. Y. (2003). Measurement of quantum states of neutrons in the Earth’s gravitational field. Physical Review D, 67(10). https://doi.org/10.1103/physrevd.67.102002 ( reposiTUm)

Westphal, G. P., Lemmel, H., Grass, F., Gwozdz, R., Jöstl, K., Schröder, P., & Hausch, E. (2001). A gamma-spectrometry system for activation analysis. Journal of Radioanalytical and Nuclear Chemistry, 248(1), 53–60. https://doi.org/10.1023/a:1010617822574 ( reposiTUm)

Grass, F., Lemmel, H., Westphal, G. P., & Gwozdz, R. (2001). Total activation analysis: A new approach. Journal of Trace and Microprobe Techniques, 19(2), 211–216. https://doi.org/10.1081/tma-100002210 ( reposiTUm)

Sterba, J. H., Blaauw, M., Steinhauser, G., Bichler, M., & Westphal, G. P. (2007). Accelerating k₀. 12th Int. Conf. on Modern Trends in Activation Analysis (MTAA 12), Tokyo (Japan), Non-EU. http://hdl.handle.net/20.500.12708/126571 ( reposiTUm)

Sterba, J. H., Blaauw, M., & Westphal, G. P. (2007). Die Erweiterung des Neutronen Aktivierungsanalysators durch die k₀-Method. 21. Seminar Aktivierungsanlyse und Gammaspektrometrie, Mainz (Deutschland), EU. http://hdl.handle.net/20.500.12708/126569 ( reposiTUm)

Westphal, G. P., & Abele, H. (2007). Limits on axions and other short range 5^th forces. Proc. Rencontres de Moriond, Val d’Aosta, Italy, EU. http://hdl.handle.net/20.500.12708/128689 ( reposiTUm)

Pahlke, S., Meirer, F., Streli, C., Wobrauschek, P., Westphal, G. P., & Mantler, M. (2005). Adaption of a commercial TXRF system for wafer surface analysis equipped with a new generation of silicon drift detector. 11th TXRF Conference, Budapest (Hungary), EU. http://hdl.handle.net/20.500.12708/125793 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., & Sterba, J. H. (2005). Automatischer Aktivierungsanalysator. Activation Analysis Seminar, GArching (Deutschland), EU. http://hdl.handle.net/20.500.12708/125878 ( reposiTUm)

Westphal, G. P., Grass, F., Sterba, J. H., & Lemmel, H. (2005). Rapid Automatic Neutron Activation Analysis. IAEA Technical Meeting: Large Sample NAA, Wien (Österreich), Austria. http://hdl.handle.net/20.500.12708/125880 ( reposiTUm)

Grass, F., Westphal, G. P., Gwozdz, R., Sterba, J. H., & Lemmel, H. (2005). Total Activation Analysis of Enlarged Samples. IAEA Technical Meeting: Large Sample NAA, Wien (Österreich), Austria. http://hdl.handle.net/20.500.12708/125879 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., & Sterba, J. H. (2005). A System for Rapid Automatic Neutron Activation Analysis. Asia-Pacific Symposium on Radiochemistry (APSORC-05), Beijing (China), Non-EU. http://hdl.handle.net/20.500.12708/125881 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., & Sterba, J. H. (2004). Automatic Activation Analysis at a Triga Reactor. 2nd World TRIGA Users Conf., Atominstitut (Wien), Austria. http://hdl.handle.net/20.500.12708/124887 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., & Sterba, J. H. (2004). Automatic Activation Analysis. 11th Int. Conf. “Modern Trends in Activation Analysis,” Univ. of Surrey, Guildford (UK), Austria. http://hdl.handle.net/20.500.12708/124886 ( reposiTUm)

Westphal, G. P., Lemmel, H., Grass, F., De Regge, P. P., Burns, K., & Markowicz, A. (2003). An Expert System for NAA ? 3rd African Research Reactors Conf., Rabatt (Morocco), Austria. http://hdl.handle.net/20.500.12708/124888 ( reposiTUm)

Westphal, G. P., Lemmel, H., Grass, F., De Regge, P. P., Burns, K., & Markowicz, A. (2003). A Neutron Activation Analyser. 6th Int. Conf. on Methods and Applications of Radioanalytical  Chemistry, Kona (Hawaii), Austria. http://hdl.handle.net/20.500.12708/124890 ( reposiTUm)

Westphal, G. P., & Grass, F. (2002). Low-Cost Activation Analysis at Small Reactors. 4th Int. Conf. on Isotopes, Cape Town (South Africa), Austria. http://hdl.handle.net/20.500.12708/124889 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., Niedermaier, H., Jöstl, K., Schröder, P., Böck, H., Schachner, H., & Klapfer, E. (2002). Low-cost Activation Analysis at Small Research Reactors. 4th Int. Conf. on Isotopes, Cape Town (South Africa), Austria. http://hdl.handle.net/20.500.12708/123920 ( reposiTUm)

Westphal, G. P., Grass, F., Lemmel, H., Niedermaier, H., Jöstl, K., Schröder, P., Böck, H., Schachner, H., Klapfer, E., De Regge, P. P., Burns, K., & Markovics, A. (2002). Large Sample Activation Analysis at Small Research Reactors. 7th Int. Conf. on Nuclear Analytical Methods in the Life Sciences, Antalya (Turkey), Austria. http://hdl.handle.net/20.500.12708/123921 ( reposiTUm)

Westphal, G. P. (2002). High Rate Gamma Spectrometry and Loss Free Counting. NECSA, Pelindaba, Pretoria (South Africa), Austria. http://hdl.handle.net/20.500.12708/123919 ( reposiTUm)

Westphal, G. P., Abele, H., & Baessler, S. (2007). Analytically derived limits on short-range fifth forces from quantum states of neutrons in the Earth’s gravitational field. arXiv. https://doi.org/10.48550/arXiv.0703108 ( reposiTUm)