@article{10_4064_sm_2_1_91_96,
     author = {S. Kaczmarz},
     title = {Zur {Theorie} der {Fourierschen} {Doppelreihe}},
     journal = {Studia Mathematica},
     pages = {91--96},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1930},
     doi = {10.4064/sm-2-1-91-96},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-2-1-91-96/}
}