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Rubin, M.; Engrand, Cécile; Snodgrass, Colin; Weissman, Paul; Altwegg, Kathrin; Busemann, Henner; Morbidelli, Alessandro; Mumma, Michael (2020). On the Origin and Evolution of the Material in 67P/Churyumov-Gerasimenko. Space science reviews, 216(5) Springer 10.1007/s11214-020-00718-2
Busemann, Henner; Bühler, Fritz; Grimberg, A.; Heber, V.S.; Agafonov, Y.N.; Baur, H.; Bochsler, Peter; Eismont, N.A.; Wieler, R.; Zastenker, G.N. (2006). Interstellar Helium Trapped with the COLLISA Experiment on the MiR Space Station-Improved Isotope Analysis by In Vacuo Etching. Astrophysical journal, 639(1), pp. 246-258. London: Institute of Physics Publishing IOP 10.1086/499223
