Appeared in: Discrete Math 79 (1989), 313-322.
The Stembridge-Stanton "trick" (or rather "method", since I used it at least two times, in fact quite a few times), served me very well, most dramatically in the proof of the Alternating Sign Matrix Conjecture. Here I show how it can be used to find a beautiful elementary proof of the celebrated q-analog of the Morris Constant Term Identity, first proved by Laurent Habsieger and Kevin Kadell (independently). The method of this article was further used, to great advantage, by Shaun Cooper, a student of Dick Askey.
Doron Zeilberger's List of Papers