@article{MZ_1986__191_173664,
     author = {Yoshihiro Shibata and Yoshio Tsutsumi},
     title = {On a {Global} {Existence} {Theorem} of {Small} {Amplitude} {Solutions} for {Nonlinear} {Wave} {Equations} in an {Exterior} {Domain.}},
     journal = {Mathematische Zeitschrift},
     pages = {165--200},
     publisher = {mathdoc},
     volume = {191},
     year = {1986},
     zbl = {0592.35028},
     url = {http://geodesic.mathdoc.fr/item/MZ_1986__191_173664/}
}