@book { TheConceptofUtopia,
    title = "The Concept of Utopia",
    subtitle = "Student edition",
    author = "Ruth {Levitas}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/978-3-0353-0010-9",
    url = "https://www.peterlang.com/document/1043738"
}