@article{GDZPPN002272849, title = {A Set of Continuous Orthogonal Functions}, journal = {Mathematische Annalen}, volume = {98}, year = {1928}, pages = {522-529}, zbl = {54.0324.03}, url = {http://dml.mathdoc.fr/item/GDZPPN002272849} }
Franklin, Ph. A Set of Continuous Orthogonal Functions. Mathematische Annalen, Tome 98 (1928) pp. 522-529. http://gdmltest.u-ga.fr/item/GDZPPN002272849/