@article{DAN_1990_310_3_a5,
     author = {F. G. Maksudov and F. K. Khudaverdiev},
     title = {A study of a multidimensional mixed problem for a class of},
     journal = {Doklady Akademii Nauk},
     pages = {539--542},
     publisher = {mathdoc},
     volume = {310},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_310_3_a5/}
}