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ProblemsUnderwood Dudley, Howard Eves, Abraham P. Hillman, Donald E. Knuth, Murray S. Klamkin, H. S. M. Coxeter, Leo Moser, William O. J. Moser, H.-J. Seiffert, Paul Erdos, Laszlo Lovasz, Paul C. Rosenbloom, C. Kenneth Fan and Sidney Kung · Mathematics Magazine · 1987