- Supreme Court of Minnesota | Friday, March 20, 1987 | Cited 0 times
- Supreme Court of Minnesota | Friday, January 15, 1982 | Cited 0 times
- Supreme Court of the United States | Thursday, June 17, 1976 | Cited 0 times
- Supreme Court of the United States | Monday, June 7, 1993 | Cited 0 times