Autor:	Tomescu, Ioan, Northshield, Sam, Palacios, Jose Luis, Quet, Leroy, Hajja, Mowaffaq, Borosh, Itshak, Hensley, Douglas, Hobbs, Arthur M., Evans, Anthony, Knuth, Donald E., Schindler, Werner
Zdroj:	The American Mathematical Monthly, 1994 Aug 01. 101(7), 681-682.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/2974700 Zobrazit plný text záznamu