@book { ProliferationandImplementationofPrisonOmbudsmen,
    title = "Proliferation and Implementation of Prison Ombudsmen",
    author = "Sabine {Carl}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03747-0",
    url = "https://www.peterlang.com/document/1047907"
}