@article{GDZPPN002310198,
title = {Nonlinear Perturbations of Uncoupled Systems of Elliptic Operators.},
journal = {Mathematische Annalen},
volume = {212},
year = {1974},
pages = {155-170},
url = {http://dml.mathdoc.fr/item/GDZPPN002310198}
}
Martin, R.H. jr. Nonlinear Perturbations of Uncoupled Systems of Elliptic Operators.. Mathematische Annalen, Tome 212 (1974) pp. 155-170. http://gdmltest.u-ga.fr/item/GDZPPN002310198/