- Nebraska Supreme Court | Friday, March 11, 1988 | Cited 0 times
- Supreme Court of the United States | Wednesday, January 21, 1981 | Cited 0 times
- Supreme Court of the United States | Monday, June 12, 1972 | Cited 0 times
- Supreme Court of the United States | Wednesday, June 8, 1983 | Cited 0 times