E. Abu-Nada, Z. Masoud and A. Hijazi, “Natural Convection Heat Transfer Enhancement in Horizontal Concentric Annuli Using Nanouids,” International Communication in Heat and Mass Transfer, Vol. 35, No. 5, 2008, pp. 657-665. doi10.1016/j.icheatmasstransfer.2007.11.004 - References - Scientific Research Publishing