@article{DAN_1958_118_6_a9,
     author = {V. K. Saul'ev},
     title = {Refined methods and two-sided approximations to a solution of parabolic equations},
     journal = {Doklady Akademii Nauk},
     pages = {1088--1090},
     publisher = {mathdoc},
     volume = {118},
     number = {6},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_118_6_a9/}
}