@article{GDZPPN002487039,
title = {A THeorem of Global Existence of Solutions to Nonlinear Wave Equations in Four Space Dimensions.},
journal = {Monatshefte f\"ur Mathematik},
volume = {109},
year = {1990},
pages = {123-134},
zbl = {0718.35063},
url = {http://dml.mathdoc.fr/item/GDZPPN002487039}
}
Gao, Jianmin. A THeorem of Global Existence of Solutions to Nonlinear Wave Equations in Four Space Dimensions.. Monatshefte für Mathematik, Tome 109 (1990) pp. 123-134. http://gdmltest.u-ga.fr/item/GDZPPN002487039/