@book { TheColumbiaCircleofScholars,
    title = "The Columbia Circle of Scholars",
    subtitle = "Selections from the Journal (1930–1957)",
    author = "Elzbieta {Halas}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091509"
}