@article{CMH_1945__18_138873,
     author = {Georges Alexits},
     title = {Sur la sommation forte des s\'eries orthogonales.},
     journal = {Commentarii mathematici Helvetici},
     pages = {122--128},
     publisher = {mathdoc},
     volume = {18},
     year = {1945},
     zbl = {0060.17004},
     url = {http://geodesic.mathdoc.fr/item/CMH_1945__18_138873/}
}