@book { DevelopmentTendencyofEnergyAShortReview,
    title = "Development Tendency of Energy. A Short Review",
    author = "Rehan {Jamil}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/267964"
}