@book { HandbookofSustainabilityResearch,
    title = "Handbook of Sustainability Research",
    author = "Walter {Leal Filho}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1144013"
}