@Article{McC93,
    Author       = "McCune, W.W.",
    Year         = "1993",
    Title        = "{Single Axioms for Groups and Abelian Groups with Various
                    Operations}",
    Journal      = "Journal of Automated Reasoning",
    Volume       = "10",
    Number       = "1",
    Pages        = "1-13",
    Comment      = "TPTPRef"
}