@article{DAN_1971_197_5_a3,
     author = {F. N. Galstyan},
     title = {Local analogs of a theorem of {Heyde}},
     journal = {Doklady Akademii Nauk},
     pages = {1003--1006},
     publisher = {mathdoc},
     volume = {197},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_197_5_a3/}
}