@book { InnovationDiffusionundBeschftigung,
    title = "Innovation, Diffusion und Beschäftigung",
    author = "Bernhard {Holwegler}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13969",
    url = "https://www.peterlang.com/document/1068514"
}