@article{10_4064_cm_1_3_225_229,
     author = {Antoni Zygmund},
     title = {Two notes on the summability of infinite series},
     journal = {Colloquium Mathematicum},
     pages = {225--229},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1947},
     doi = {10.4064/cm-1-3-225-229},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-1-3-225-229/}
}