DeveciÖ., and KaradumanE. “Lehmer Sequences in Finite Groups”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 2 (February 25, 2016): 175-182. Accessed December 3, 2020. http://umj.imath.kiev.ua/index.php/umj/article/view/1832.