The number of triangles in a tringulation of a set of points in the plane. S.L. Hakimi, E.F. Schmeichel (1980) Elemente der Mathematik
The Tutte polynomial of a graph, depth-first search, and simplicial complex partitions. Gessel, Ira M., Sagan, Bruce E. (1996) The Electronic Journal of Combinatorics [electronic only]
The two uniform infinite quadrangulations of the plane have the same law Laurent Ménard (2010) Annales de l'I.H.P. Probabilités et statistiques We prove that the uniform infinite random quadrangulations defined respectively by Chassaing–Durhuus and Krikun have the same distribution.
Trivial Selmer groups and even partitions of a graph. Brown, Morgan V., Calkin, Neil J., James, Kevin, King, Adam J., Lockard, Shannon, Rhoades, Robert C. (2006) Integers