@book { DiesozialeKrankenversicherunginderVolksrepublikChina,
    title = "Die soziale Krankenversicherung in der Volksrepublik China",
    author = "Yu {Lou}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108010"
}