1. The Development of Hydrocracking
2. R.C. Hansford Hydrocracking Process and Catalyst, U.S. Patent 1970 3,524,809, Aug. 18
3. J.W. Ward Hydrocracking Process with Stabilized Y Zeolite Catalyst, U.S. Patent 1975 3,897,327, July 29
4. T.W. Tippett J.W. Ward NPRA Annual Meeting 1985 March 24–26