@book { EnergyEconomics,
    title = "Energy Economics",
    author = "Abdulkadir {Develi} and Selahattin {Kaynak}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02573-6",
    url = "https://www.peterlang.com/document/1046854"
}