@book { WegeundDienstreisezeiten,
    title = "Wege- und Dienstreisezeiten",
    author = "Michael {Heintz}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06925-9",
    url = "https://www.peterlang.com/document/1050578"
}