I. Abdul-Wahab, Majid, and Suha A. Mohammed. 2009. “Prediction of Effective Bed Thermal Conductivity and Heat Transfer Coefficient in Fluidized Beds”. Iraqi Journal of Chemical and Petroleum Engineering 10 (3), 1-8. http://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/407.