1. Apperly L. W. ( 1968). “Effect of turbulence on sediment entrainment.” PhD thesis University of Auckland Auckland New Zealand.
2. “Erosion rates of cohesive soils.”;Ariathurai R.;J. Hydr. Div.,1978
3. “Pore and eroding fluid influences on surface erosion of soil.”;Arulanandan K.;J. Geotech. Engrg. Div.,1975
4. ASTM. ( 1999a). . “Standard practice for thin-walled tube geotechnical sampling of soils.” ASTM-D1587 West Conshohocken Pa.
5. ASTM. ( 1999). “Standard test method for identification and classification of dispersive clay soils by the pinhole test.” ASTM-D4647 West Conshohocken Pa.