Gasinski, Leszek. Nonlinear analysis / by Leszek Gasinski and Nikolaos S. Papageorgiou - New York: Chapman ana Hall Ltd., 2006. - xi, 971p. - Series in mathematical analysis and applications . ISBN: 1584884843 Subjects--Topical Terms: MathNonlinear operatorsSobolev spacesVariational principles Dewey Class. No.: 515.7 / GAS/N