Elementary Problems: E3349-E3352,E3354,E3353

Autor: Szekely, Laszlo A., Erdos, Paul, Wimp, Jet, Bencharit, Um, Senum, G. I., Alexandrov, V. A., Dairbekov, N. S., Diamond, H. G.
Zdroj: The American Mathematical Monthly, 1989 Nov 01. 96(9), 837-838.
Databáze: JSTOR Journals