1. Enumerative uses of generating functions;Bender;Indiana Univ. Math. J.,1971
2. On the foundations of combinatorial theory: The idea of generating function;Doubilet;Sixth Berkeley symposium on mathematical statistics and probability,1972
3. The number of k-colored graphs on labelled nodes;Read;Canad. J. Math.,1960
4. A chromatic-like polynomial for ordered sets;Stanley;Proc. second Chapel Hill conference on combinatorial mathematics and its applications,1970
5. Ordered structures and partitions;Stanley;Mem. Am. Math. Soc.,1972