D. Al. D.H. Alwan, D., I. W. MaidA, D. and H. Soheel, A. (2013) “Numerical and Experimental Study of Counter Flow Cooling Tower Performance with Difference Packs Porosity and Configuration”, Al-Rafidain Engineering Journal (AREJ), 21(6), pp. 101–115. doi: 10.33899/rengj.2013.82397.