@book { CALLforBackground,
    title = "CALL for Background",
    author = "Anna {Turula} and Anita {Buczek-Zawiła}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18131",
    url = "https://www.peterlang.com/document/1059475"
}