1. Schomaker A, Boerboom H, Visser A. Anaerobic digestion of agro-industrial wastes: information networks. Technical summary on gas treatment. August 2000. Project FAIR-CT96-2083.
2. Simulation model methane as a tool for effective biogas production during anaerobic conversion of complex organic matter;Vavillin;Bioresource Technology,1994
3. Controlling H2S emissions;Nagl;Chemical Engineering,1997
4. Methane recovery from animal manures: the current opportunities casebook;Lusk;NREL/SR-25145. Golden Colorado.,1998
5. Process and composition for increasing the reactivity of sulfur scavenging iron oxide;Scranton;US Patent 5,792,438, accepted August,1998