@article{DE_1989_25_8_a13,
     author = {A. V. Lezhnev},
     title = {Lower bounds on the {Green} function of the second mixed problem for a second-order parabolic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1383--1393},
     publisher = {mathdoc},
     volume = {25},
     number = {8},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_8_a13/}
}