@book { Transformation,
    title = "Transformation",
    author = "Oliver {Haas} and Klaus {North} and Claus-Bernhard {Pakleppa} and Natalia {Zaitseva}",
    year = "2022",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1219158"
}