@Article{Sti86-JAR,
    Author       = "Stickel, M.E.",
    Year         = "1986",
    Title        = "{Schubert's Steamroller Problem: Formulations and
                    Solutions}",
    Journal      = "Journal of Automated Reasoning",
    Volume       = "2",
    Number       = "1",
    Pages        = "89-101",
    Comment      = "TPTPRef, general reasoning"
}