@article{DE_1990_26_9_a11,
     author = {A. V. Kartynnik},
     title = {A three-point mixed problem with an integral condition with respect to the space variable for second-order parabolic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1568--1575},
     publisher = {mathdoc},
     volume = {26},
     number = {9},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_9_a11/}
}