Counting Depth Zero Patterns in Ballot Paths. - Heinrich Niederhausen; Shaun Sullivan (Integers, 2011)

Bivariate Finite Operator Calculus and Counting Ballot Paths Containing Patterns. - Shaun Sullivan (Fundam. Informaticae, 2012)

An Ordered Partition Expansion of the Determinant. - Erik Insko; Katie Johnson; Shaun Sullivan (Integers, 2017)

Tipsy cop and drunken robber: a variant of the cop and robber game on graphs. - Pamela E. Harris; Erik Insko; Alicia Prieto-Langarica; Rade Stoisavljevic; Shaun Sullivan (CoRR, 2020)