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@article{IVM_1980_8_a11, author = {E. E. Petrov}, title = {Classes of conjugate elements of the group $Sl(2,Z/p^{\lambda}Z)$, $p\neq 2$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {85--88}, publisher = {mathdoc}, number = {8}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_8_a11/} }
E. E. Petrov. Classes of conjugate elements of the group $Sl(2,Z/p^{\lambda}Z)$, $p\neq 2$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1980), pp. 85-88. http://geodesic.mathdoc.fr/item/IVM_1980_8_a11/