Hamza, M. “Study the Effect of Carbon Fiber Volume Fraction and Their Orientations on the Thermal Conductivity of the Polymer Composite Materials.”. Al-Khwarizmi Engineering Journal, Vol. 4, no. 1, Mar. 2008, pp. 80-89, http://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/533.