@book { 3DPrintingRealProjectfortheAutomotiveIndustryReflectiveJournal,
    title = "3D Printing Real Project for the Automotive Industry. Reflective Journal",
    author = "Kristal {Robles}",
    year = "2017",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/371820"
}