@book { DiehistorischenRomanevonJaanKross,
    title = "Die historischen Romane von Jaan Kross",
    author = "Kerttu {Wagner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091739"
}