1. The Physics of Blown Sand and Desert Dunes;Bagnold,1941
2. Aeolian Sand and Sand Dunes;Pye,1990
3. Geomorphology of Desert Dunes;Lancaster,1995
4. The Barchans of Southern Peru;Finkel;J. Geol.,1959
5. The Barchans of the Arequipa Region;Hastenrath,1967