@book { OpenSourceSoftwareundEmbeddedSystems,
    title = "Open Source Software und Embedded Systems",
    author = "Michael {Ernst}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842813670",
    url = "https://m.diplom.de/document/228472"
}