@article{01566942,
title = {Sufficient conditions for elliptic problem of optimal control in },
journal = {Lobachevskii Journal of Mathematics},
volume = {7},
year = {2000},
pages = {19-32},
zbl = {0976.49015},
language = {en},
url = {http://dml.mathdoc.fr/item/01566942}
}
Addou, A.; Lahrech, S. Sufficient conditions for elliptic problem of optimal control in . Lobachevskii Journal of Mathematics, Tome 7 (2000) pp. 19-32. http://gdmltest.u-ga.fr/item/01566942/