@article{10_4064_sm_3_1_226_238,
     author = {R. Paley},
     title = {Some theorems on orthogonal functions (1)},
     journal = {Studia Mathematica},
     pages = {226--238},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1931},
     doi = {10.4064/sm-3-1-226-238},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-3-1-226-238/}
}