@book { PossibleCausesoftheEnvironmentalKuznetsCurve,
    title = "Possible Causes of the Environmental Kuznets Curve",
    author = "Christoph Martin {Lieb}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1096905"
}