Okoth, Konyango Griffin, and Joseph Lumumba Barasa. 2014. “A Test of the Effect of Macro-Economic Variables on Volatility of Securities Prices: Evidence from Nairobi Securities Exchange”. Operations Research Society of Eastern Africa, December, 114-61. https://orseajournal.udsm.ac.tz/index.php/orsea/article/view/28.