MALNIČ, Aleksander, POTOČNIK, Primož, SEIFTER, Norbert in ŠPARL, Primož, 2015, Reachability relations, transitive digraphs and groups. Ars mathematica contemporanea [na spletu]. 2015. Vol. 8, no. 1, p. 83–94. [Dostopano 3 april 2025]. Pridobljeno s: https://repozitorij.upr.si/IzpisGradiva.php?lang=slv&id=17611