- United States Tax Court | Wednesday, September 2, 2009 | Cited 0 times
- United States Tax Court | Wednesday, September 2, 2009 | Cited 0 times
- District Court, W.D. Oklahoma | Tuesday, October 15, 1985 | Cited 0 times
- United States Tax Court | Monday, September 9, 1991 | Cited 0 times
- United States Tax Court | Thursday, October 24, 1991 | Cited 0 times