Da. Kandilakis et Ns. Papageorgiou, EXISTENCE THEOREMS FOR NONLINEAR BOUNDARY-VALUE-PROBLEMS FOR 2ND-ORDER DIFFERENTIAL-INCLUSIONS, Journal of differential equations, 132(1), 1996, pp. 107-125
In this paper we consider a nonlinear two-point boundary value problem
For second order differential inclusions. Using the Leray-Schauder pr
inciple and its multivalued analog due to Dugundji-Granas, we prove ex
istence theorems for convex and nonconvex problems. Our results are qu
ite general and incorporate as special cases several classes of proble
ms which are of interest in the literature. (C) 1996 Academic Press, I
nc.