By Coon, Dennis W. K., Kirkham, Nigel, Lallemand, Roger C.
By Thompson, Roger C.
By Legg, Roger C.
By Harvey, Roger C., Ashworth, Allan
By Wang, Wallace, Parker, Roger C.
By Croxson, Roger C.
By Randall, John E.; Allen, Gerald R. and Steene, Roger C.
By Ramos, Juan-Luis, Levesque, Roger C.
By Parker, Roger C.
By Sanders, Roger C.