Finite Edge-Transitive Oriented Graphs of Valency Four: a Global Approach. - Jehan A. Al-bar; Ahmad N. Al-kenani; Najat M. Muthana; Cheryl E. Praeger; Pablo Spiga (Electron. J. Comb., 2016)

A normal quotient analysis for some families of oriented four-valent graphs. - Jehan A. Al-bar; Ahmad N. Al-kenani; Najat M. Muthana; Cheryl E. Praeger (Ars Math. Contemp., 2017)