1-4 of 4 Books

Spectral analysis, differential equations, and mathematical physics
By Fritz Gesztesy,H. Holden,Barry Simon,Gerald Teschl
Variational and optimal control problems on unbounded domains
Variational and optimal control problems on unbounded domains
By A. Leizarowitz,Gershon Wolansky,Alexander J. Zaslavski
Nonlinear analysis and optimization
Nonlinear analysis and optimization
By B. Sh Mordukhovich,Simeon Reich,Alexander J. Zaslavski
Optimization theory and related topics
Optimization theory and related topics
By Dan Butnariu,Simeon Reich,Alexander J. Zaslavski