@book { PerformanceMeasurementfrmobilesozialeSoftware,
    title = "Performance Measurement für mobile soziale Software",
    author = "Joscha {May}",
    year = "2012",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842830271",
    url = "https://m.diplom.de/document/229217"
}