@book { StrukturanalysederElfesKonstruktion,
    title = "Strukturanalyse der „Elfes-Konstruktion“",
    author = "Martin {Russell Varga}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14729",
    url = "https://www.peterlang.com/document/1057204"
}