@article{ZVMMF_1970_10_3_a19,
     author = {I. V. Konoval'tsev},
     title = {Certain properties of a linear-fractional operator which has applications in the theory of difference schemes},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {753--759},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1970_10_3_a19/}
}