@article{M2AN_2014__48_1_1_0,
     author = {Charles, Alexandre and Ballard, Patrick},
     title = {Existence and uniqueness of solutions to dynamical unilateral contact problems with coulomb friction: the case of a collection of points},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {1--25},
     publisher = {EDP-Sciences},
     volume = {48},
     number = {1},
     year = {2014},
     doi = {10.1051/m2an/2013092},
     mrnumber = {3177835},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2013092/}
}