1. Bagnold, R. A., , The Physics of Blown Sand and Desert Dunes, 39-76 Methuen, London, 1941,
2. Bird, R. B., , W. E., Stewart, , E. N., Lightfoot, , Transport Phenomena, 21-24 John Wiley, New York, 1960,
3. Definitive equations for the fluid resistance of spheres;Davies;Proc. Phys. Soc. London,1945
4. Dust storms of Mars: Considerations and simulations;Greeley;NASA Tech. Memo,1977
5. Mars climatology from Viking 1 after 20 sols;Hess;Science,1976