1. Current Ripples;Allen,1968
2. The Physics of Blown Sand and Desert Dunes;Bagnold,1954
3. Geomorphologiese Processe en die mens: die geval an die Kuisebdelta SW Africa;Barnard;Acta Geogr.,1975
4. Proceedings of an International Workshop on the Physics of Blown Sand,1985
5. The sand-dunes of the Libyan desert;Beadnell;Geogr. J.,1910