@article{GDZPPN002234750,
title = {Global existence of small radially symmetric solutions to quadratic nonlinear wave equations in an exterior domain.},
journal = {Manuscripta mathematica},
volume = {79},
year = {1993},
pages = {15-40},
zbl = {0816.35088},
url = {http://dml.mathdoc.fr/item/GDZPPN002234750}
}
Hayashi, Nakao. Global existence of small radially symmetric solutions to quadratic nonlinear wave equations in an exterior domain.. Manuscripta mathematica, Tome 79 (1993) pp. 15-40. http://gdmltest.u-ga.fr/item/GDZPPN002234750/