%0 Journal Article %A Yves de Cornulier %A Yves Stalder %A Alain Valette %T Proper actions of lamplighter groups associated with free groups %J Comptes Rendus. Mathématique %D 2008 %P 173-176 %V 346 %N 3-4 %I Elsevier %R 10.1016/j.crma.2007.11.027 %G en %F CRMATH_2008__346_3-4_173_0