@article{DAN_1978_239_6_a1,
     author = {M. I. Brin},
     title = {On the fundamental group of a manifold admitting a {U-diffeomorphism}},
     journal = {Doklady Akademii Nauk},
     pages = {1276--1278},
     publisher = {mathdoc},
     volume = {239},
     number = {6},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_6_a1/}
}