Verdon, N. ., A. Lefebvre-Lepot, P. Laure, and L. . Lobry. “Modified Lees–Edwards Boundary Conditions and Viscous Contact for Numerical Simulations of Particles in a Shear Flow”. European Journal of Computational Mechanics, vol. 21, no. 3-6, June 2012, pp. 397-06, doi:10.13052/17797179.2012.714851.