Autor:	Berman, Martin, Kahn, Steve, Fala, Gino T., Schaumberger, Norman, Allison, Joe, Pinker, Aron, Kaufman, Allan, Rothschild, Joseph, Eisenberg, Theodore, Kahn, Steven, Oman, J., McLean, Michael, Trimble, Richard W., Penner, Sidney, Zimmerman, Paul
Zdroj:	The Two-Year College Mathematics Journal, 1977 Jan 01. 8(1), 42-46.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3026884 Zobrazit plný text záznamu