Autor:	McWorter,, William A., Sved, Marta, Erdos, Paul, Siskakis, Aristomenis, Shafer, Robert E., Mycielski, Jan, Ruderman, Harry D., Schlosser, J., Howard, J., Izard, Roger, COPS, The, Nummela, Eric C., Ruderman, Harry D., Heuer, G. A., Demir, Huseyin, Webb, J. H., Rigby, J. F., Euler, Russell, Linders, J. C., Newcomb, William A.
Zdroj:	Mathematics Magazine, 1985 Sep 01. 58(4), 237-245.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/2689523 Zobrazit plný text záznamu