@book { ELearningandEducationforSustainability,
    title = "E-Learning and Education for Sustainability",
    author = "Ulisses Miranda {Azeiteiro} and Walter {Leal Filho} and Sandra S. {Caeiro}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02460-9",
    url = "https://www.peterlang.com/document/1129795"
}