1. Density-currents;Knapp;Trans. Amer. Geophys. Union,1941
2. Erosion, transportation, and sedimentation performed by the atmosphere;Udden;J. Geol.,1894
3. U.S. Dept. Agric. Bur. Soils, Bull.;Free,1911
4. Lake Mead density current investigations, 1937–1940;Vetter,1941
5. The transportation of sediment by flowing water and its importance in soil conservation;Johnson,1941