@book { BonesandSkullsKapitel1bis5,
    title = "Bones and Skulls - Kapitel 1 bis 5",
    author = "Franck A. {Leblang}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1011735"
}