@article{DAN_1964_159_3_a11,
     author = {F. M. Ragab},
     title = {Expansions into double {Kamp\'e} de {F\'eriet} hypergeometric functions of higher orders},
     journal = {Doklady Akademii Nauk},
     pages = {519--521},
     publisher = {mathdoc},
     volume = {159},
     number = {3},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_3_a11/}
}