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@article{DAN_1971_200_3_a6, author = {V. P. Platonov}, title = {On the maximality problem for arithmetic groups}, journal = {Doklady Akademii Nauk}, pages = {530--533}, publisher = {mathdoc}, volume = {200}, number = {3}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_3_a6/} }
V. P. Platonov. On the maximality problem for arithmetic groups. Doklady Akademii Nauk, Tome 200 (1971) no. 3, pp. 530-533. http://geodesic.mathdoc.fr/item/DAN_1971_200_3_a6/