A combinatorial proof of J. West's conjecture

Symmetry and unimodality in t-stack sortable permutations

Journal of Combinatorial Theory Series A

Generating functions for generating trees

Discrete Mathematics

132-avoiding two-stack sortable permutations, Fibonacci numbers, and Pell numbers

Discrete Applied Mathematics

Finitely labeled generating trees and restricted permutations

Journal of Symbolic Computation

Sorting with networks of data structures

Discrete Applied Mathematics

Restricted non-separable planar maps and some pattern avoiding permutations

Discrete Applied Mathematics