Gessel, Ira

• The Electronic Journal of Combinatorics Volume 4, Issue 2 (1997) (The Wilf Festschrift volume) - Research Papers
  Generating Functions and Generalized Dedekind Sums
  Abstract  PDF
• The Electronic Journal of Combinatorics Volume 5 (1998) - Research Papers
  Lattice walks in $Z^d$ and permutations with no long ascending subsequences
  Abstract  PDF