@book { TheStartupWay,
    title = "The Startup Way",
    author = "Eric {Ries} and Eckhart {Böhme} and Meike {Grow}",
    year = "2018",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1219100"
}