@book { SomeProblemsoftheSecondSouthSlavicInfluenceinRussia,
    title = "Some Problems of the Second South Slavic Influence in Russia",
    author = "Ilya {Talev}",
    year = "1973",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12199",
    url = "https://www.peterlang.com/document/1066734"
}