@article{DAN_1966_167_3_a12,
     author = {L. A. Shemetkov},
     title = {Normal structure of finite groups},
     journal = {Doklady Akademii Nauk},
     pages = {534--537},
     publisher = {mathdoc},
     volume = {167},
     number = {3},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_167_3_a12/}
}