@article{DAN_1977_235_5_a8,
     author = {F. O. Porper},
     title = {Estimates for the derivatives of a fundamental solution of a stationary divergence parabolic equation in terms of constants that do not depend on the smoothness of the coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1022--1025},
     publisher = {mathdoc},
     volume = {235},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_5_a8/}
}