@article{article, title  = {{Transient free convection between two concentric spheres filled witha porous medium}},

 publisher = {{American Institute of Aeronautics and Astronautics (AIAA)}},

 url = {{}},

 year = {{1993}},

 month = {{1}},

 author = {{Pop I and Ingham DB and Cheng P}},

 doi = {{10.2514/3.483}},

 volume = {{7}},

 journal = {{Journal of Thermophysics and Heat Transfer}},

 issue = {{4}},

 pages = {{724-727}},

 note = {{Accessed on 2024/12/22}}}