@article{DAN_1972_206_6_a3,
     author = {A. K. Gushchin},
     title = {On estimates from below of solutions of the second boundary value problem for a second-order parabolic equation in domains unbounded in the space variables},
     journal = {Doklady Akademii Nauk},
     pages = {1284--1287},
     publisher = {mathdoc},
     volume = {206},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_6_a3/}
}