@book{id_7122,
author = "Klein-Barmen, Fritz",
title = "Zur Axiomatik der Semigruppen",
year = "1956",
address = "München",
publisher = "Verl.d.Bayer.Akad.d.Wiss.",
series = "Sitzungsbericht der Bayerischen Akademie der Wissenschaften",
volume = "1956,20.",
url = "http://publikationen.badw.de/de/003383886",
}