@article{DAN_1965_161_6_a5,
     author = {A. V. Ivanov},
     title = {A priori estimates for solutions of linear second-order equations of elliptic and parabolic types},
     journal = {Doklady Akademii Nauk},
     pages = {1270--1273},
     publisher = {mathdoc},
     volume = {161},
     number = {6},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_6_a5/}
}