References
- Amiri H, Jafarian Amiri SM. Sum of element orders of finite groups of the same order. J Algebr Appl. 2011;10(2):187–190. doi: 10.1142/S0219498811004057
- Jafarian Amiri SM, Amiri M. Second maximum sum of element orders on finite groups. J Pure Appl Algebr. 2014;218(3):531–539. doi: 10.1016/j.jpaa.2013.07.003
- Jafarian Amiri SM. Second maximum sum of element orders of finite nilpotent groups. Commun Algebr. 2013;41(6):2055–2059. doi: 10.1080/00927872.2011.653070
- Amiri H, Jafarian Amiri SM. Isaacs IM. Sums of element orders in finite groups. Commun Algebr. 2009;37(9):2978–2980. doi: 10.1080/00927870802502530
- Shen R, Chen G, Wu C. On groups with the second largest value of the sum of element orders. Commun Algebr. 2015;43(6):2618–2631. doi: 10.1080/00927872.2014.900686
- Robinson D. A course in the theory of groups. New York: Springer; 1993 (Graduate Texts in Math.; Volume 80).
- Pakianathan J, Shankar K. Nilpotent numbers. Am Math Monthly. 2000;107(7):631–634. doi: 10.1080/00029890.2000.12005248