@book { Wehrkonomik,
    title = "Wehrökonomik",
    author = "Alexander {Breunig} and Harald {Pöcher} and Herbert {Strunz}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101767"
}