@article{10_4064_sm_1_1_87_121,
     author = {S. Kaczmarz},
     title = {Sur la convergence et la sommabilit\'e des d\'eveloppements orthogonaux},
     journal = {Studia Mathematica},
     pages = {87--121},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1929},
     doi = {10.4064/sm-1-1-87-121},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-1-1-87-121/}
}