On Counting Permutations by Pairs of Congruence Classes of Major Index.

Hélène Barcelo Robert Maule Sheila Sundaram On Counting Permutations by Pairs of Congruence Classes of Major Index. 2002 9 Electr. J. Comb. 1 http://www.combinatorics.org/Volume_9/Abstracts/v9i1r21.html db/journals/combinatorics/combinatorics9.html#BarceloMS02