Chamoret, D., A. . Rassineux, P. . Villon, and J.-M. . Bergheau. “Régularisation d’une Surface De Contact Par Approximation Diffuse”. European Journal of Computational Mechanics, vol. 11, no. 2-4, Dec. 2002, pp. 431-45, https://journals.riverpublishers.com/index.php/EJCM/article/view/2623.