1. Combined Natural and Forced Convection Laminar Flow and Heat Transfer of Fluids with and without Heat Sources in Channels with Linearly Varying Wall Temperature;Ostrach;NACA TN3141,1954
2. Convective Heat Transfer for Mixed, Free, and Forced Flow Through Tubes;Eckert;ASME,1954
3. On Combined Free and Forced Convection in Channels;Tao;Jour. Heat Transfer, Trans. ASME,1960
4. A Variational Method for Combined Free and Forced Convection in Channels;Agrawal;International Jour. Heat and Mass Transfer,1962
5. On the Second Fundamental Problem of Combined Free and Forced Convection Through Vertical Non-circular Ducts;Iqbal;Appl. Sci. Res.,1972