@article{MZ_1926__25_167879,
     author = {A. Zygmund},
     title = {Sur les s\'eries trigonom\'etriques sommables par le proc\'ed\'e {dePoisson}},
     journal = {Mathematische Zeitschrift},
     pages = {274--290},
     year = {1926},
     volume = {25},
     zbl = {52.0272.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1926__25_167879/}
}