@book { DieNestorianerundderfrheIslam,
    title = "Die Nestorianer und der frühe Islam",
    author = "Marijke {Metselaar}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107095"
}