Seed Train Optimization for Cell Culture
B. Frahm, in: R. Pörtner (Ed.), Animal Cell Biotechnology - Methods and Protocols, 3rd ed., Humana Press, Totowa, NJ, 2013, pp. 355–367.

Seed Train Optimization for Cell Culture
B. Frahm, in: Animal Cell Biotechnology, Humana Press, Totowa, NJ, 2013, pp. 355–367.

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.