1. Free convective heat and mass transfer from spheroids, elliptic cylinders and similarity flow bodies;Pandya,1967
2. Heat transfer at small Grashof numbers;Mahony,1956
3. Laminar natural convection about an isothermally heated sphere at small Grashof numbers;Fendel;J. Fluid Mech.,1968
4. Laminar free convection about an isothermal sphere at extremely small Grashof numbers;Hossain,1966
5. Heat transfer to small Grashof particles by natural convection;Meyer;Inst. Chem. Engrs,1937