Sign-Changing Critical Point Theory - Zou, Wenming; SpringerLink (Online service) (Boston, MA : Springer US, 2008)
Keywords: Mathematics; Functional analysis; Global analysis; Differential equations, partial; Mathematical optimization; Topology; Mathematics; Approximations and Expansions; Topology; Functional Analysis; Partial Differential Equations; Calculus of Variations and Optimal Control; Optimization; Global Analysis and Analysis on Manifolds