Three recitations on holonomic systems and hypergeometric series. Zeilberger, Doron (1990) Séminaire Lotharingien de Combinatoire [electronic only]
Tiling a ( 2 × n ) -board with squares and dominoes. Katz, Matt, Stenson, Catherine (2009) Journal of Integer Sequences [electronic only]
Towards the distribution of the size of a largest planar matching and largest planar subgraph in random bipartite graphs. Kiwi, Marcos, Loebl, Martin (2008) The Electronic Journal of Combinatorics [electronic only]
Two very short proofs of combinatorial identity. Anglani, Roberto, Barile, Margherita (2005) Integers