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@article{DAN_1973_208_3_a9, author = {N. T. Petrov}, title = {On the length of simple groups}, journal = {Doklady Akademii Nauk}, pages = {537--540}, publisher = {mathdoc}, volume = {208}, number = {3}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_208_3_a9/} }
N. T. Petrov. On the length of simple groups. Doklady Akademii Nauk, Tome 208 (1973) no. 3, pp. 537-540. http://geodesic.mathdoc.fr/item/DAN_1973_208_3_a9/