@article{MS2_1978__42_166574,
     author = {Per Asisoff},
     title = {Some combinatorial identities.},
     journal = {Mathematica Scandinavica},
     pages = {49--52},
     publisher = {mathdoc},
     volume = {42},
     year = {1978},
     zbl = {0415.05013},
     url = {http://geodesic.mathdoc.fr/item/MS2_1978__42_166574/}
}