MAREE, J.; OLIVIER, E.; SWANEPOEL, A. The 2004 senior Harmony South African Mathematics Olympiad: An analysis of the results of the senio group, second round. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;, v. 23, n. 3, p. 52-60, 23 set. 2004.