@book { IrenusEiblEibesfeldt,
    title = "Irenäus Eibl-Eibesfeldt",
    author = "Christa {Sütterlin} and Frank K. {Salter}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093041"
}