1. How to assemble tree machines;Bhatt,1982
2. Combinatorial Properties of Partially Ordered Sets Associated with Partitions and Finite Abelian Groups;Butler,1986
3. A unimodality result in the enumeration of subgroups of a finite abelian group;Butler,1987
4. Q-counting rook configurations and a formula of Frobenius;Garsia;J. Combin. Theory Ser. A,1986
5. Binomial determinants, paths, and hook length formulae;Gessel;Adv. in Math.,1985