@article{GDZPPN002422441,
title = {On the Existence of Global Smooth Solutions of Certain Semi-Linear Hyperbolic Equations.},
journal = {Mathematische Zeitschrift},
volume = {166},
year = {1979},
pages = {99-136},
zbl = {0388.35048},
url = {http://dml.mathdoc.fr/item/GDZPPN002422441}
}
Brenner, Philip. On the Existence of Global Smooth Solutions of Certain Semi-Linear Hyperbolic Equations.. Mathematische Zeitschrift, Tome 166 (1979) pp. 99-136. http://gdmltest.u-ga.fr/item/GDZPPN002422441/