@incollection { Hartmann1969,
title = {Die Nation als politischer Faktor },
author = {Hartmann, Ludo Moritz },
pages = {80-97 },
year = {1969 },
publisher = {Sauer u. Auvermann },
url = {http://nbn-resolving.de/urn:nbn:de:0168-ssoar-187965 },
}