1. Heat transfer in geothermal system;Cheng;Adv. Heat Transfer,1978
2. Natural convection in a porous medium: external flows;Cheng,1984
3. Natural convection in porous medium and geothermal system;Combarnous,1978
4. Investigation of the influence of free thermal convection on heat transfer through granular material;Schneider,1963
5. The boundary layer regime for convection in a vertical porous layer;Weber;Int. J. Heat Mass Transfer,1975