@article{PORMA_1993__50_2_115686,
     author = {Jinhai, Yan},
     title = {Contr\^olabilit\'e exacte pour l'\'equation des ondes avec contraintes sur le contr\^ole},
     journal = {Portugaliae mathematica},
     pages = {237--254},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {1993},
     mrnumber = {1244504},
     zbl = {0800.93170},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1993__50_2_115686/}
}