@book { Sollichpromovieren,
    title = "Soll ich promovieren?",
    subtitle = "Voraussetzungen, Chancen, Strategien",
    author = "Silke {Hell}",
    year = "2017",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220989"
}