@article{DAN_1980_252_3_a1,
     author = {A. I. Kozhanov and N. A. Lar'kin and N. N. Yanenko},
     title = {A regularization of variable type equations},
     journal = {Doklady Akademii Nauk},
     pages = {525--527},
     publisher = {mathdoc},
     volume = {252},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a1/}
}