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@article{PORMA_1967__26_3_115027, author = {Khichi, K.S.}, title = {A generalisation of {Vandermonde's} theorem}, journal = {Portugaliae mathematica}, pages = {275--279}, publisher = {mathdoc}, volume = {26}, number = {3}, year = {1967}, mrnumber = {0276507}, zbl = {0193.36103}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115027/} }
Khichi, K.S. A generalisation of Vandermonde's theorem. Portugaliae mathematica, Tome 26 (1967) no. 3, pp. 275-279. http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115027/