@book { TrnenamOubangui,
    title = "Tränen am Oubangui",
    subtitle = "Eine Deutsche im Herzen Afrikas",
    author = "Cornelia {Canady}",
    year = "2012",
    publisher = "hey! publishing",
    address = "München, Germany",
    doi = "10.3239/9783942822022",
    url = "https://www.heypublishing.com/document/203842"
}