Coupon collecting with quotas. May, Russell (2008) The Electronic Journal of Combinatorics [electronic only]
Cycle index, weight enumerator, and Tutte polynomial. Cameron, Peter J. (2002) The Electronic Journal of Combinatorics [electronic only]
Cycle peaks and partial derivatives. (Pics de cycles et dérivés partielles.) Dumont, Dominique (1985) Séminaire Lotharingien de Combinatoire [electronic only]
Cyclic sieving phenomenon in non-crossing connected graphs. Guo, Alan (2011) The Electronic Journal of Combinatorics [electronic only]