@book { InnovationsundUmweltmanagementinkleinenundmittlerenUnternehmen, title = "Innovations- und Umweltmanagement in kleinen und mittleren Unternehmen", author = "Bernd {Blessin}", year = "2018", publisher = "Peter Lang Verlag", address = "Berlin, Germany", doi = "10.3726/b13984", url = "https://www.peterlang.com/document/1068528" }