1. O. A. Alekseeva and A. S. Kondrat’ev, “Quasi-recognition of some finite simple groups by the set of element orders,” in Proceedings of the Ukrainian Mathematical Congress, Kiev, Ukraine, 2001, Sect. 1: Algebra and Number Theory (Inst. Mat. Nats. Akad. Nauk Ukr., Kiev, 2003), p. 4.
2. O. A. Alekseeva and A. S. Kondrat’ev, “On recognizability of the group E 8(q) by the set of orders of elements,” Ukr. Math. J. 54(7), 1200–1206 (2002).
3. O. A. Alekseeva and A. S. Kondrat’ev, “Quasirecognition of one class of finite simple groups by the set of element orders,” Sib. Math. J. 44(2), 195–207 (2003).
4. O. A. Alekseeva and A. S. Kondrat’ev, “Recognition by spectrum of the groups 2 D p(3) for an odd prime p,” Tr. Inst. Mat. Mekh. UrO RAN 14(4), 3–11 (2008).
5. A. V. Vasil’ev, “Recognizing groups G 2(3n) by their element orders,” Algebra Logic 41(2), 74–80 (2002).