Media type: E-Article Title: 5243 Contributor: Just, Erwin; Sullivan, Herbert; Bosch, A. J.; van Yzeren, J. imprint: Mathematical Association of America, 1965 Published in: The American Mathematical Monthly Language: English ISSN: 0002-9890; 1930-0972 Keywords: Problems and Solutions Origination: Footnote: Access State: Open Access