Author: Papageorgiou, Nikolaos S.

Gasiński, Leszek; Papageorgiou, Nikolaos S.: Extremal solutions and strong relaxation for second order multivalued boundary value problems. (English). Czechoslovak Mathematical Journal, vol. 55 (2005), issue 4, pp. 827-844
Kyritsi, Sophia Th.; Matzakos, Nikolaos; Papageorgiou, Nikolaos S.: Nonlinear boundary value problems for second order differential inclusions. (English). Czechoslovak Mathematical Journal, vol. 55 (2005), issue 3, pp. 545-579

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