@article{hal-01108770, author = {Velammal, G}, title = {Is the binomial coefficient $2n \choose n$ square free?}, journal = {HAL}, volume = {1995}, number = {0}, year = {1995}, language = {en}, url = {http://dml.mathdoc.fr/item/hal-01108770} }
Velammal, G. Is the binomial coefficient $2n \choose n$ square free?. HAL, Tome 1995 (1995) no. 0, . http://gdmltest.u-ga.fr/item/hal-01108770/