Knipprath, Nina2019-03-262019-03-262019-03-26http://dx.doi.org/10.01234/t35t-38https://researchdata.test.hhu.de/handle/entry/55adfghfjhghjmesCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/fdhgadfBook