@book { LandeskundlicheProjekteimInternet,
    title = "Landeskundliche Projekte im Internet",
    author = "Anja {Peukert}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832471552",
    url = "https://m.diplom.de/document/222466"
}