@incollection{1999:herb:constant,
title = {Constant},
year = {1999},
note = {},
booktitle = {Bürgerliche Freiheit},
pages = {160--172},
edition = {},
author = {Herb, Karlfriedrich},
publisher = {Karl Alber},
address = {Baden-Baden},
series = {Praktische Philosophie},
volume = {61}
}