1. Etudes sur les Glaciers, 1840;Agassiz,1940
2. An approach to identification of morphoclimates;Ahnert,1987
3. Introduction to Geomorphology;Ahnert,1998
4. Solifluction, a component of subaerial denudation;Andersson;J. Geol.,1906
5. The Physics of Blown Sand and Desert Dunes;Bagnold,1941