@book { RiesenundZwergeindermittelalterlichenLiteratur,
    title = "Riesen und Zwerge in der  mittelalterlichen Literatur",
    author = "Toralf {Schrader}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640232468",
    url = "https://www.hausarbeiten.de/document/119799"
}