TY - JOUR AU - Charles, Alexandre AU - Ballard, Patrick TI - Existence and uniqueness of solutions to dynamical unilateral contact problems with coulomb friction: the case of a collection of points JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2014 SP - 1 EP - 25 VL - 48 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/m2an/2013092/ DO - 10.1051/m2an/2013092 LA - en ID - M2AN_2014__48_1_1_0 ER -