@book { YentzuunddasYentzuchunchiu,
    title = "Yen-tzu und das Yen-tzu ch'un-ch'iu",
    author = " {Rainer Holzer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072823"
}