İnce, O.,İnce, B.K., Yenigün, O., “Determination of Potential Methane Production Capacity of a Granular Sludge from a Pilot-scale Upflow Anaerobic Sludge Blanket Reactor Using a Specific Methanogenic Activity Test”, Journal of Chemical Technology and Biotechnology, 76, 6, 573-578, 2001.