@article{1200773127,
author = {Yamada, Yoshio},
title = {Some remarks on the equation $y\sbtt-\sigma (y\sbx)$ $y\sbxx-y\sbxtx=f$},
journal = {Osaka J. Math.},
volume = {17},
number = {1},
year = {1980},
pages = { 303-323},
language = {en},
url = {http://dml.mathdoc.fr/item/1200773127}
}
Yamada, Yoshio. Some remarks on the equation $y\sbtt-\sigma (y\sbx)$ $y\sbxx-y\sbxtx=f$. Osaka J. Math., Tome 17 (1980) no. 1, pp. 303-323. http://gdmltest.u-ga.fr/item/1200773127/