@article{01582311,
title = {Exact distributed controllability for the semilinear wave equation.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {57},
year = {2000},
pages = {493-508},
zbl = {0967.93009},
language = {en},
url = {http://dml.mathdoc.fr/item/01582311}
}
Liu, Wei-Jiu. Exact distributed controllability for the semilinear wave equation.. Portugaliae Mathematica. Nova Série, Tome 57 (2000) pp. 493-508. http://gdmltest.u-ga.fr/item/01582311/