Autor:	Clarke, Walter B., Crain, Karleton W., Farnell, Albert, Vest, M. L., Thebault, V., Trigg, C. W., Rosenbaum, J., Gehman, Harry M., Altshiller-Court, Nathan, Short, W. T., Simpson, Jeannette, Wishard, G. W., Starke, E. P., Moessner, Alfred, Duncan, Dewey C.
Zdroj:	National Mathematics Magazine, 1938 Mar 01. 12(6), 301-311.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3028596 Zobrazit plný text záznamu