Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1986_40_6_a2, author = {A. N. Ostylovskii}, title = {Periodic groups with countable subgroups}, journal = {Matemati\v{c}eskie zametki}, pages = {722--725}, publisher = {mathdoc}, volume = {40}, number = {6}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_6_a2/} }
A. N. Ostylovskii. Periodic groups with countable subgroups. Matematičeskie zametki, Tome 40 (1986) no. 6, pp. 722-725. http://geodesic.mathdoc.fr/item/MZM_1986_40_6_a2/