Cd. Degooijer et al., BIOREACTORS IN SERIES - AN OVERVIEW OF DESIGN PROCEDURES AND PRACTICAL APPLICATIONS, Enzyme and microbial technology, 18(3), 1996, pp. 202-219
''If one fermenter gives good results, two fermenters will give better
results and three fermenters better still. This is sometimes true, bu
t often false.'' Herbert, D.(9)