@book { BankertragundBevlkerungsdynamik,
    title = "Bankertrag und Bevölkerungsdynamik",
    author = "Marco {Oestmann}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04881-0",
    url = "https://www.peterlang.com/document/1067503"
}