@article{GDZPPN00221637X,
title = {H\"older Continuity of Solutions of Elliptic Systems.},
journal = {Manuscripta mathematica},
volume = {4},
year = {1971},
pages = {299-308},
zbl = {0223.35044},
url = {http://dml.mathdoc.fr/item/GDZPPN00221637X}
}
Widman, Kjell-Ove. Hölder Continuity of Solutions of Elliptic Systems.. Manuscripta mathematica, Tome 4 (1971) pp. 299-308. http://gdmltest.u-ga.fr/item/GDZPPN00221637X/