@book { CrisisandSustainabilityResponsesfromDifferentPositions,
    title = "Crisis and Sustainability: Responses from Different Positions",
    author = "George {Chobanov} and Jürgen {Plöhn}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03807-1",
    url = "https://www.peterlang.com/document/1047469"
}