%0 Journal Article %A Castro, C. %T Asymptotic analysis and control of a hybrid system composed by two vibrating strings connected by a point mass %J ESAIM: Control, Optimisation and Calculus of Variations %D 1997 %P 231-280 %V 2 %I EDP-Sciences %U http://archive.numdam.org/item/COCV_1997__2__231_0/ %G en %F COCV_1997__2__231_0