1-3 of 3 Books
Approximation-Solvability of Nonlinear Functional and Differential Equations
Approximation-Solvability of Nonlinear Functional and Differential Equations
By Wolodymyr V. Petryshyn

Approximation-solvability of nonlinear functional and differential equations
By Wolodymyr V. Petryshyn
Topological degree theory and applications
Topological degree theory and applications
By Donal O'Regan