@Article{Try92-JFM,
    Author       = "Trybulec, A.",
    Year         = "1992",
    Title        = "{Some Isomorphisms Between Functor Categories}",
    Journal      = "Journal of Formalized Mathematics",
    Volume       = "3",
    Number       = "1",
    Pages        = "33-40",
    Comment      = "TPTPRef,ISOCAT_2"
}