@article{DAN_1994_338_2_a1,
     author = {I. M. Gel'fand and M. I. Graev},
     title = {Hypergeometric functions on flag spaces},
     journal = {Doklady Akademii Nauk},
     pages = {154--157},
     publisher = {mathdoc},
     volume = {338},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_338_2_a1/}
}