@book { NullSubjectPropertiesofSlavicLanguages,
    title = "Null-Subject Properties of Slavic Languages",
    author = "Martina {Lindseth}",
    year = "1998",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12585",
    url = "https://www.peterlang.com/document/1067034"
}