@article{GDZPPN002342650,
title = {Two summation formulae for product sums of binomial coefficients},
journal = {Mathematica Scandinavica},
volume = {1},
year = {1953},
pages = {261-262},
zbl = {0053.00704},
url = {http://dml.mathdoc.fr/item/GDZPPN002342650}
}
ANDERSEN, ERIK SPARRE. Two summation formulae for product sums of binomial coefficients. Mathematica Scandinavica, Tome 1 (1953) pp. 261-262. http://gdmltest.u-ga.fr/item/GDZPPN002342650/