@article{GDZPPN002424215,
title = {On the First Eigenvalue of Non-Uniformly Elliptic Boundary Value Problems.},
journal = {Mathematische Zeitschrift},
volume = {174},
year = {1980},
pages = {227-232},
zbl = {0439.35053},
url = {http://dml.mathdoc.fr/item/GDZPPN002424215}
}
Trudinger, Neil S. On the First Eigenvalue of Non-Uniformly Elliptic Boundary Value Problems.. Mathematische Zeitschrift, Tome 174 (1980) pp. 227-232. http://gdmltest.u-ga.fr/item/GDZPPN002424215/