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ProblemsMurray S. Klamkin, Roy Barbara, Shahin Amrahov, Mowaffaq Hajja, Michel Bataille, Michael Botsko, Mike Hitchman, Herb Bailey, Daniele Donini, Michael Golgenberg, Mark Kaplan, David Gove, Peter J. Gressis, Enkel Hysnelaj, Victor Y. Kutsenok, Li Zhou, Kent Holing, Knut Dale, John Christopher, Con Amore Problem Group, Chip Curtis, Martin Levin, H. T. Tang, José Luis Díaz-Barrero, Juan José Egozcue, G.R.A.20 Problems Group, Minh Can, Ovidiu Furdui, Heinz-Jürgen Seiffert, Achilleas Sinefakapoulos, Ricardo M. Torrejón, H. A. Shah Ali, Razvan A. Satnoianu, Elias Lampakis, Northwestern University Math Problem Solving Group and Jawad Sadek · Mathematics Magazine · 2004