Petrenyuk, A. Ya. “Semirotational Tree Factorizations of Complete Graphs”. Ukrains’kyi Matematychnyi Zhurnal 53, no. 5 (May 25, 2001): 715–721. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4295.