@book { PoetologischesTheologischesStudienzumGregoriusHartmannsvonAue,
    title = "Poetologisches, Theologisches.- Studien zum «Gregorius» Hartmanns von Aue",
    author = "Oliver {Hallich}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1116308"
}