1. Asymmetrical ripple marks and the origin of water-laid Cosets of Cross-Strata
2. J. R. L. ALLEN , 1968 . Current Ripples . North-Holland, Amsterdam, 433 pp.
3. R. A. BAGNOLD , 1954 . The Physics of Blown Sand and Desert Dunes . Methuen, London, 265 pp.
4. The flow of cohesionless grains in fluids