1. Abramowitz, M., Stegun, I.A., 1964. Handbook of Mathematical Functions. Dover Publications Inc., New York, pp. 355–374.
2. Bagnold, R.A., 1941. The Physics of Blown Sand and Desert Dunes. Chapman & Hall, London, pp. 247–257.
3. Experiemets on a gravity-free dispersion of large solid spheres in a newtonian fluid under shear;Bagnold;Proc. Roy. Soc.,1954
4. The shearing and dilataion of dry sand and the singing mechanism;Bagnold;Proc. Roy. Soc.,1966
5. Scattering of electromagnetic waves by arbitrarily shaped dielectric bodies;Barber;Appl. Opt.,1975