@book { CommonRootsoftheLatvianandEstonianLiteraryLanguages,
    title = "Common Roots of the Latvian and Estonian Literary Languages",
    author = "Kristiina {Ross} and Peteris {Vanags}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103258"
}