@article{01750393, title = {Boundary value problems for second-order partial differential equations with operator coefficients.}, journal = {Abstract and Applied Analysis}, volume = {6}, year = {2001}, pages = {253-266}, doi = {10.1155/S1085337501000628}, zbl = {1016.35001}, language = {en}, url = {http://dml.mathdoc.fr/item/01750393} }
Fayazov, Kudratillo S.; Schock, Eberhard. Boundary value problems for second-order partial differential equations with operator coefficients.. Abstract and Applied Analysis, Tome 6 (2001) pp. 253-266. doi : 10.1155/S1085337501000628. http://gdmltest.u-ga.fr/item/01750393/