@article{GDZPPN002327503,
title = {A Comparison Theorem.},
journal = {Mathematische Annalen},
volume = {270},
year = {1985},
pages = {271-276},
zbl = {0562.14002},
url = {http://dml.mathdoc.fr/item/GDZPPN002327503}
}
Okonek, Christian. A Comparison Theorem.. Mathematische Annalen, Tome 270 (1985) pp. 271-276. http://gdmltest.u-ga.fr/item/GDZPPN002327503/