Effect of N2 on Biological Methanation in a Continuous Stirred-Tank Reactor with Methanothermobacter marburgensis
M.P. Hoffarth, T. Broeker, J. Schneider, Fermentation 5 (2019).

Determination of dissolved CO2 concentration and CO2 production rate of mammalian cell suspension culture based on off-gas measurement
B. Frahm, H.-C. Blank, P. Cornand, W. Oelßner, U. Guth, P. Lane, A. Munack, K. Johannsen, R. Pörtner, Journal of Biotechnology 99 (2002) 133–148.