@article{PORMA_1967__26_3_115027,
     author = {Khichi, K.S.},
     title = {A generalisation of {Vandermonde's} theorem},
     journal = {Portugaliae mathematica},
     pages = {275--279},
     year = {1967},
     volume = {26},
     number = {3},
     mrnumber = {0276507},
     zbl = {0193.36103},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115027/}
}