R. Roberts

A thermophilic/mesophilic dual digestion system for treating waste activated sludge

C. Forster, S. Le, R. Roberts, 1999 .

Two-Stage, Thermophilic-Mesophilic Anaerobic Digestion of Sewage Sludge

W. Davies, C. Forster, R. Roberts, 1999 .

An Examination of Thermophilic Anaerobic Digestion as the First Stage in Dual Digestion

C. Forster, S. Le, R. Roberts, 1998 .