1. Invisible permutations and rook placements on a Ferrers board;Ding,1992
2. On the rook polynomials of Ferrers relations;Foata,1970
3. q-counting rook configurations and a formula of Frobenius;Garsia;J. Combin. Theory Ser. A,1986
4. An Introduction to Combinatorial Analysis;Riordan,1958