Qualitative analysis of 3D elastostatic contact problems with orthotropic Coulomb friction and solution-dependent coefficients of friction. - Jaroslav Haslinger; Radek Kucera; Tomás Ligurský (J. Comput. Appl. Math., 2011)

Computing non unique solutions of the Coulomb friction problem. - Vladimír Janovský; Tomás Ligurský (Math. Comput. Simul., 2012)