@book { DerLeiterderGmbHGesellschafterversammlung, title = "Der Leiter der GmbH-Gesellschafterversammlung", author = "Marcel {Kleemann}", year = "2013", publisher = "Peter Lang Verlag", address = "Berlin, Germany", doi = "10.3726/978-3-653-02817-1", url = "https://www.peterlang.com/document/1046419" }