L ∞ -error estimate for a system of elliptic quasivariational inequalities. Boulbrachene, M.; Haiour, M.; Saadi, S. — 2003 International Journal of Mathematics and Mathematical Sciences
On a noncoercive system of quasi-variational inequalities related to stochastic control problems. Boulbrachene, M.; Haiour, M.; Chentouf, B. — 2002 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]