C. Opara, C., U. I. Osuagwu, and M. M. Atuka. “Modelling the Effect of Temperature on Specific Death Rate of the Micro-Flora of Raw Cotton Wool”. Pure and Applied Science Advances, vol. 2, no. 1, Jan. 2013, pp. 10-15, http://www.sjournals.com/index.php/sjpas/article/view/1014.