@article{TVP_1987_32_4_a16,
     author = {M. A. Perelmuter and Yu. A. Semenov},
     title = {Probability {Conserving} {Elliptic} {Operators}},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {786--789},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1987_32_4_a16/}
}