@article{MZM_1980_27_6_a2,
     author = {A. M. Ivanov},
     title = {A property of $p$-serving subgroups of groups of $p$-adic integers},
     journal = {Matemati\v{c}eskie zametki},
     pages = {859--867},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1980_27_6_a2/}
}