@article{DAN_1986_288_2_a3,
     author = {I. M. Gel'fand and S. I. Gel'fand},
     title = {Generalized hypergeometric equations},
     journal = {Doklady Akademii Nauk},
     pages = {279--283},
     publisher = {mathdoc},
     volume = {288},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_288_2_a3/}
}