@article{IVM_1991_12_a4,
     author = {A. G. Losev},
     title = {Some {Liouville} theorems on {Riemannian} manifolds of a~special type},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {15--24},
     year = {1991},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_12_a4/}
}