@book { InformellesVerwaltungshandelninDeutschlandundJapan,
    title = "Informelles Verwaltungshandeln in Deutschland und Japan",
    author = "Julia {Walkling}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099959"
}