@book { DerMnchunddieWikingerBand2DasBuchGlendalough,
    title = "Der Mönch und die Wikinger - Band 2: Das Buch Glendalough",
    author = "Claus-Peter {Lieckfeld}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Germany",
    doi = "10.3239/9783955203214",
    url = "https://m.dotbooks.de/document/262398"
}