@book { VietnameseinPoland,
    title = "Vietnamese in Poland",
    author = "Grażyna {Szymańska-Matusiewicz}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b15412",
    url = "https://www.peterlang.com/document/1056898"
}