@article{UZMU_1952_163_163_a9,
     author = {A. M. Vasil'ev},
     title = {On a pair of $W$ congruences},
     journal = {Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta},
     pages = {137--145},
     publisher = {mathdoc},
     volume = {163},
     number = {163},
     year = {1952},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZMU_1952_163_163_a9/}
}