Existence and regularity of optimal solution for a dead oil isotherm problem. Sidi Ammi, Moulay Rchid, Torres, Delfim F.M. (2007) APPS. Applied Sciences
Existence and uniqueness for optimal control of oxygen absorption in aquatic system. Agusto, F.B., Bamigbola, O.M. (2008) APPS. Applied Sciences
Existence and uniqueness of constrained globally optimal feedback controls in a linear-quadratic framework. Xu, Yashan (2006) Journal of Applied Mathematics and Stochastic Analysis
Existence of lipschitzian solutions to the classical problem of the calculus of variations in the autonomous case A. Cellina, A. Ferriero (2003) Annales de l'I.H.P. Analyse non linéaire
Existence of regular solutions for a one-dimensional simplified perfect-plastic problem with a unilateral gradient constraint. Astruc, Thierry (1997) Journal of Convex Analysis