Ghanbarzadeh, A., M. Wilson, A. Morina, and A. Neville. “A New Strategy for the Relative Movement of Rough Surfaces in Contact Using a Boundary Element Method”. European Journal of Computational Mechanics, vol. 25, no. 4, Jan. 2016, pp. 309-28, https://journals.riverpublishers.com/index.php/EJCM/article/view/813.