@article{3021,
author = {P\'ovoas, M.},
title = {Boundary control of a symmetric hyperbolic system with nonlinear boundary conditions},
journal = {Portugaliae mathematica},
volume = {41},
year = {1982},
pages = {393-403},
zbl = {0553.49005},
mrnumber = {0766867},
language = {en},
url = {http://dml.mathdoc.fr/item/3021}
}
Póvoas, M. Boundary control of a symmetric hyperbolic system with nonlinear boundary conditions. Portugaliae mathematica, Tome 41 (1982) pp. 393-403. http://gdmltest.u-ga.fr/item/3021/