@book { TheBurnoutPhenomenon,
    title = "The Burnout Phenomenon",
    author = "Robert {Frisinger}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832498863",
    url = "https://m.diplom.de/document/225003"
}