@article{1077474309, author = {Hartman, Philip}, title = {Multiplicative sequences and T\"oplerian $(L^2)$ -bases}, journal = {Duke Math. J.}, volume = {14}, number = {1}, year = {1947}, pages = { 755-767}, language = {en}, url = {http://dml.mathdoc.fr/item/1077474309} }
Hartman, Philip. Multiplicative sequences and Töplerian $(L^2)$ -bases. Duke Math. J., Tome 14 (1947) no. 1, pp. 755-767. http://gdmltest.u-ga.fr/item/1077474309/