@article{DAN_1969_184_4_a5,
     author = {S. N. Chernikov},
     title = {Infinite nonabelian groups with a condition of minimality for noninvariant abelian subgroups},
     journal = {Doklady Akademii Nauk},
     pages = {786--789},
     publisher = {mathdoc},
     volume = {184},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_4_a5/}
}