- Nebraska Supreme Court | Friday, May 18, 1990 | Cited 0 times
- Nebraska Supreme Court | Friday, May 31, 1991 | Cited 0 times
- Supreme Court of the United States | Monday, June 17, 1968 | Cited 0 times
- Supreme Court of the United States | Friday, August 22, 1980 | Cited 0 times
- Supreme Court of the United States | Monday, May 27, 1968 | Cited 0 times