Jajcay, R., Potočnik, P., & Wilson, S. (2019). The Praeger-Xu graphs: Cycle structures, maps and semitransitive orientations. Acta Mathematica Universitatis Comenianae, 88(2), 269-291. Retrieved from http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/amuc/article/view/980