@article{DE_1995_31_8_a18,
     author = {I. Ya. Roitberg and Ya. A. Roitberg},
     title = {Green's formula and the denseness of solutions of general parabolic boundary value problems in function spaces on manifolds},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1426--1433},
     publisher = {mathdoc},
     volume = {31},
     number = {8},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_8_a18/}
}