@article{1077469446, author = {Gosselin, Richard P.}, title = {Orthonormal series and density of integers}, journal = {Duke Math. J.}, volume = {28}, number = {1}, year = {1961}, pages = { 133-141}, language = {en}, url = {http://dml.mathdoc.fr/item/1077469446} }
Gosselin, Richard P. Orthonormal series and density of integers. Duke Math. J., Tome 28 (1961) no. 1, pp. 133-141. http://gdmltest.u-ga.fr/item/1077469446/