@article{RM_1987_42_3_a14,
     author = {S. I. Lyashko},
     title = {On~the~solubility of mixed boundary-value problems with operator-valued coefficients},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {224--225},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1987_42_3_a14/}
}