1. Guiyun Chen,On Thompson's Conjecture, J. Algebra,15 1996 184–193.
2. Guiyun Chen,A New Characterization of Sporadic Groups, Algebra Colloq3(1) (1996), 49–58.
3. Guiyun Chen,A New Characterization of Suzuki-Ree Groups, Sci. in China(ser. A)27(5) (1997), 430–433.
4. Guiyun Chen,A New Characterization of G 2 (q), J. Southwest China Normal Univ.26(5) (2001), 503–509.
5. Guiyun Chen,A New Characterization of E 8 (q), J. Southwest China Normal Uni.21(3) (1995), 215–217.