@article{GDZPPN002196387,
title = {Variational inequalities for vector-valued functions.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {310},
year = {1979},
pages = {191-220},
zbl = {0408.49012},
url = {http://dml.mathdoc.fr/item/GDZPPN002196387}
}
Hildebrandt, S.; Widman, K.-O. Variational inequalities for vector-valued functions.. Journal für die reine und angewandte Mathematik, Tome 310 (1979) pp. 191-220. http://gdmltest.u-ga.fr/item/GDZPPN002196387/