@article{DAN_1976_230_4_a8,
     author = {N. I. Samedov},
     title = {On the solvability of a boundary value problem in space for a quasi-linear system of fourth order equations of mixed type},
     journal = {Doklady Akademii Nauk},
     pages = {785--788},
     publisher = {mathdoc},
     volume = {230},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_230_4_a8/}
}