Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1992__114_1_178589, author = {Nikolaos S. Papageorgiou}, title = {Optimal {Control} and {Relaxation} of {Nonlinear} {Elliptic} {Systems.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {209--244}, publisher = {mathdoc}, volume = {114}, number = {1}, year = {1992}, zbl = {0768.49003}, url = {http://geodesic.mathdoc.fr/item/MOMA_1992__114_1_178589/} }
Nikolaos S. Papageorgiou. Optimal Control and Relaxation of Nonlinear Elliptic Systems.. Monatshefte für Mathematik, Tome 114 (1992) no. 1, pp. 209-244. http://geodesic.mathdoc.fr/item/MOMA_1992__114_1_178589/