@book { OlgaBerggolc,
    title = "Ol'ga Berggol'c",
    author = "Eva-Maria {Fiedler-Stolz}",
    year = "1977",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12780",
    url = "https://www.peterlang.com/document/1067167"
}