@article{RM_2004_59_5_a1,
     author = {I. M. Gel'fand and M. I. Graev and V. S. Retakh},
     title = {Hypergeometric functions over an arbitrary field},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {831--905},
     publisher = {mathdoc},
     volume = {59},
     number = {5},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2004_59_5_a1/}
}