A proof of the peak polynomial positivity conjecture. - Alexander Diaz-Lopez; Pamela E. Harris; Erik Insko; Mohamed Omar (J. Comb. Theory A, 2017)

Counting peaks on graphs. - Alexander Diaz-Lopez; Lucas Everham; Pamela E. Harris; Erik Insko; Vincent Marcantonio; Mohamed Omar (Australas. J Comb., 2019)

Descent polynomials. - Alexander Diaz-Lopez; Pamela E. Harris; Erik Insko; Mohamed Omar; Bruce E. Sagan (Discret. Math., 2019)

Arithmetical structures on bidents. - Kassie Archer; Abigail C. Bishop; Alexander Diaz-Lopez; Luis David García-Puente; Darren B. Glass; Joel Louwsma (Discret. Math., 2020)

A formula for enumerating permutations with a fixed pinnacle set. - Alexander Diaz-Lopez; Pamela E. Harris; Isabella Huang; Erik Insko; Lars Nilsen (Discret. Math., 2021)

Critical Groups of Arithmetical Structures on Star Graphs and Complete Graphs. - Kassie Archer; Alexander Diaz-Lopez; Darren B. Glass; Joel Louwsma (Electron. J. Comb., 2024)