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机译:Finite Groups Which Have 20 Elements of Maximal Order
Chengdu Univ Informat Technol, Sch Appl Math, Chengdu 610225, Peoples R China;
Hainan Normal Univ, Sch Math & Stat, Haikou 571158, Hainan, Peoples R China|Hainan Normal Univ, Minist Educ, Key Lab Data Sci & Intelligence Educ, Haikou 571158, Hainan, Peoples R China;