@book { VirgoMaterMediatrix,
    title = "Virgo - Mater - Mediatrix",
    subtitle = "Untersuchungen zu Priester Wernhers «Driu liet von der maget»",
    author = "Gabriele {Lenger}",
    year = "1981",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072359"
}