@article{IVM_2002_1_a6,
     author = {B. A. Kats},
     title = {On a~generalization of a~theorem of {N.} {A.~Davydov}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {39--44},
     year = {2002},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2002_1_a6/}
}