by Hughes, E. C., Stine, H. M., Strecker, H. A., Eastwood, S. C., Gutzeit, C. L., Stover, W. A., Wantuck, S. J.
Published in Industrial and engineering chemistry (01.03.1952)

by OLECK S M, TSOUNG-YUAN YAN, STOVER W A
Year of Publication 23.01.1973

by Chester, Arthur W., Stover, William A.
Published in Product R & D (01.12.1977)