1. The Use of Phase-Plane Analysis in the Modeling and the Control of a Biomethanization Process;Antunes,1981
2. Dynamic Modeling and Simulation of the Anaerobic Digestion Process - Anaerobic Biological Treatment Processes;Andrews,1974
3. Hill D.T. and Barth C.L., "A Dynamic Model for Simulation of Animal Waste Digestion". Journal W.P.C.F., October 1977.