@article{MAN_1916__77_158743,
     author = {O. Sz\'asz},
     title = {\"Uber die {Approximation} stetiger {Funktionen} durch lineare {Aggregate} von {Potenzen}},
     journal = {Mathematische Annalen},
     pages = {482--496},
     publisher = {mathdoc},
     volume = {77},
     year = {1916},
     zbl = {46.0419.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1916__77_158743/}
}