Anaerobic treatment of sewage sludge and grease trap sludge in continuous co-digestion by Neczaj E., Bien J., Grosser A., Worwag G. and Kacprzak M.
Anaerobic treatment of glycerol for methane and hydrogen production by Vlassis T., Stamatelatou K., Antonopoulou G. and Lyberatos G.