@book { TheyArentUntilICallThem,
    title = "They Aren’t, Until I Call Them",
    author = "Enikö {Bollobás}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00209-6",
    url = "https://www.peterlang.com/document/1067377"
}