1. E. J. Sandy , J. P. Motoney and D. A. Dahlstrom , “Mechanical Dewatering in Coal Preparation,” ( Joseph W. Leonard , ed.), AIME , New York , NY , pp. 12 – 22 ( 1979 ).
2. E. J. Sandy , J. P. Motoney and D. A. Dahlstrom , “Mechanical Dewatering in Coal Preparation,” ( Joseph W. Leonard , ed.), AIME , New York , NY , pp. 12 – 52 ( 1979 ).