@article{DE_1977_13_4_a7,
     author = {V. M. Kolodiazhnyi and V. A. Rvachev},
     title = {On the construction of solution structures for boundary value problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {646--653},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_4_a7/}
}