1. W. Shi, “A new characterization of the sporadic simple groups,” in Group Theory, Proc. 1987 Singapore Group Theory Conf., Walter de Gruyter, New York (1989), pp. 531-540.
2. Unsolved Problems in Group Theory, The Kourovka Notebook, 16th edn., Institute of Mathematics SO RAN, Novosibirsk (2006), http://www.math.nsc.ru/∼alglog .
3. W. Shi and J. Bi, “A new characterization of the alternating groups,” Southeast Asian Bull. Math., 16, No. 1, 81-90 (1992).
4. W. Shi and J. Bi, “A characterization of Suzuki–Ree groups,” Sci. China, Ser. A, 34, No. 1, 14-19 (1991).
5. W. Shi, “The pure quantitative characterization of finite simple groups (I),” Progr. Nat. Sci., 4, No. 3, 316-326 (1994).