@book{
title = {Der blaue Koffer },
author = {Eigner, Gerd-Peter <1942-2017>},
editor = {Haacker, Christoph <1972->},
editor = {Herbst, Alban Nikolai <1955->},
editor = {Media:ohne Hilfsmittel zu benutzen },
year = {2022},
address = {Wuppertal },
publisher = {Arco},
}