@book{id_7993,
author = "Szász, Otto",
title = "Nichtnegative trigonometrische Polynome",
year = "1917",
address = "München",
publisher = "Verl.d.K.B.Akad.d.Wiss.",
series = "Sitzungsbericht der Bayerischen Akademie der Wissenschaften",
volume = "1917,16.",
url = "http://publikationen.badw.de/de/003395579",
}