Manolov, P., and K. Tchakerian. “(2,3)-Generation of the Groups PSL${}_4\big(2^m\big)$”. Ann. Sofia Univ. Fac. Math. And Inf., vol. 96, Dec. 2004, pp. 101-4, https://ftl5.uni-sofia.bg/index.php/fmi/article/view/165.