1. Lytkina D. and Mazurov V., “Groups with given element orders,” J. Sib. Fed. Univ. Math. Phys., 7, No. 2, 191–203 (2014).
2. Jabara E. and Lytkina D. V., “On groups of exponent 36,” Sib. Math. J., 54, No. 1, 29–32 (2013).
3. GAP—Groups, Algorithms and Programming (http://www.gap-system.org).
4. Shunkov V. P., “On periodic groups with an almost regular involution,” Algebra and Logic, 11, No. 4, 260–272 (1972).
5. Shunkov V. P., “On a class of p-groups,” Algebra and Logic, 9, No. 4, 291–297 (1970).