Q.  Xu, Orpe, A. V., and Kudrolli, A., ?Lubrication effects on the flow of wet granular materials?, Physical Review E, vol. 76, no. 3, p. Article No. 031302, 2007.

A. V.  Orpe and Kudrolli, A., ?Velocity correlations in dense granular flows observed with internal imaging?, Physical Review Letters, vol. 98, no. 23, p. 238001, 2007.

L. Alexander E., Orpe, A. V., Molloy, R., Kudrolli, A., and Rothman, D. H., ?Erosion of a granular bed driven by laminar fluid flow?, Journal of Fluid Mechanics, vol. 605, pp. 47-58, 2008.

A. V.  Orpe, Kumaran, V., K. Reddy, A., and Kudrolli, A., ?Fast decay of the velocity autocorrelation function in dense shear flow of inelastic hard spheres?, EPL, vol. 84, no. 4, p. 64003, 2008.

C. H.  Rycroft, Orpe, A. V., and Kudrolli, A., ?Physical test of a particle simulation model in a sheared granular system?, Physical Review E, vol. 80, no. 3, p. 031305, 2009.