@book { InvestitionsbewertungvonProzessinnovationen,
    title = "Investitionsbewertung von Prozessinnovationen",
    author = "Markus {Perschke}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101025"
}