@article{10_4064_sm_6_1_112_116,
     author = {S. Kaczmarz},
     title = {Notes on orthogonal series {III}},
     journal = {Studia Mathematica},
     pages = {112--116},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1936},
     doi = {10.4064/sm-6-1-112-116},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-6-1-112-116/}
}