@book { Enfeolibrononfeosaber,
    title = "En feo libro non feo saber",
    subtitle = "Untersuchungen zur Stellung der Todsünden im Libro de buen amor des Juan Ruiz",
    author = "Katrin {Hedwig}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03738-8",
    url = "https://www.peterlang.com/document/1048153"
}