@book { GreekSocialEconomyRevisited,
    title = "Greek Social Economy Revisited",
    subtitle = "Voluntary, Civic and Cooperative Challenges in the 21 st  Century",
    author = "Ioannis {Nasioulas}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02824-9",
    url = "https://www.peterlang.com/document/1046030"
}