@Article{Ben92,
    Author       = "Benanav, D.",
    Year         = "1992",
    Title        = "{Recognising Unnecessary Clauses in Resolution Based
                    Systems}",
    Journal      = "Journal of Automated Reasoning",
    Volume       = "9",
    Number       = "1",
    Pages        = "43-76",
    Comment      = "TPTPRef"
}