MMN-61
The method of lower and upper solutions to the Darboux problem for partial differential inclusions
Mouffak Benchohra; S. K. Ntouyas;Abstract
The method of lower and upper solutions combined with a fixed point theorem for condensing multivalued maps due to Martelli is used to investigate the existence of solutions to an hyperbolic differential inclusion.
Vol. 4 (2003), No. 2, pp. 81-88