@article{DAN_1981_260_3_a6,
     author = {N. S. Chernikov},
     title = {Factorable locally graded groups},
     journal = {Doklady Akademii Nauk},
     pages = {543--546},
     year = {1981},
     volume = {260},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_260_3_a6/}
}