@book { KlaraBlumZhuBailan19041971,
    title = "Klara Blum - Zhu Bailan (1904-1971)",
    author = " {Zhidong Yang}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1082683"
}