@article{COCV_1997__2__231_0,
     author = {Castro, C.},
     title = {Asymptotic analysis and control of a hybrid system composed by two vibrating strings connected by a point mass},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {231--280},
     publisher = {EDP-Sciences},
     volume = {2},
     year = {1997},
     mrnumber = {1456323},
     zbl = {1055.74543},
     language = {en},
     url = {http://www.numdam.org/item/COCV_1997__2__231_0/}
}