@article{DAN_1971_198_5_a10,
     author = {S. A. Chunikhin},
     title = {On block properties of finite groups},
     journal = {Doklady Akademii Nauk},
     pages = {1032--1035},
     publisher = {mathdoc},
     volume = {198},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_198_5_a10/}
}