Feilberg, A, Dalby, F R, Hansen, M J, Dos Reis Vechi, N & Agneessens, L 2019, Application of PTRMS and stable isotopes to identify microbial processes in fermenters and manure . in A Hansel & J Dunkl (eds), Proceedings of the 8th International Conference on Proton Transfer Reaction Mass Spectrometry and its Applications . Innsbruck University Press, pp. 129-133, Innsbruck, Austria, 04/02/2019 .