@article{DAN_1980_252_1_a14,
     author = {N. S. Chernikov},
     title = {Infinite groups that are products of nilpotent subgroups},
     journal = {Doklady Akademii Nauk},
     pages = {57--60},
     publisher = {mathdoc},
     volume = {252},
     number = {1},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_1_a14/}
}