Problems and Solutions (with the collaboration of Paul Bracken, Ezra A. Brown Zachary Franco Christian Friesen László Lipták Rick Luttmann Frank B. Miles Lenhard Ng Kenneth Stolarsky Richard Stong Stan Wagon Lawrence Washington Elizabeth Wilmer Fuzhen Zhang and Li Zhou).
Problems and Solutions (with the collaboration of Paul Bracken, Ezra A. Brown Zachary Franco Christian Friesen László Lipták Rick Luttmann Frank B. Miles Lenhard Ng Kenneth Stolarsky Richard Stong Stan Wagon Lawrence Washington Elizabeth Wilmer Fuzhen Zhang and Li Zhou).
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Problems and Solutions (with the collaboration of Paul Bracken, Ezra A. Brown Zachary Franco Christian Friesen László Lipták Rick Luttmann Frank B. Miles Lenhard Ng Kenneth Stolarsky Richard Stong Stan Wagon Lawrence Washington Elizabeth Wilmer Fuzhen Zhang and Li Zhou).
(xsd:string)