@book { WarheadsSldnerinderAntike,
    title = "Warheads. Söldner in der Antike",
    author = "Maximilian {Monsees}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656453758",
    url = "https://www.hausarbeiten.de/document/229717"
}