Wallner, A., Bichler, M., Buczak, K., Fink, D., Forstner, O., Golser, R., Hotchkis, M. A. C., Klix, A., Krasa, A., Kutschera, W., Lederer, C., Plompen, A., Priller, A., Schumann, D., Semkova, V., & Steier, P. (2013). High-sensitivity isobar-free AMS measurements and reference materials for 55Fe, 68Ge and 202gPb. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 294, 374–381. https://doi.org/10.1016/j.nimb.2012.03.029