Petkovsek M. W. H. S. a. Z. D., . (1996). A=B. Wellesley: A K Peters.
Petkovsek Marko Wily Herbert S and Zeilberger Doron, . 1996. A=B. Wellesley: A K Peters.
Petkovsek Marko Wily Herbert S and Zeilberger Doron, . A=B. Wellesley: A K Peters. 1996.