Nonlinear differential equations in ordered spaces

Nonlinear ordinary differential equations

D. W. Jordan

Nonlinear ordinary differential equations

R. Grimshaw

Nonlinear mappings of monotone type

Dan Pascali

MONOTONE FLOWS AND RAPID CONVERGENCE FOR NONLINEAR PARTIAL DIFFERENTIAL EQUATIONS

V. LAKSHMIKANTHAM

Nonlinear methods in Riemannian and Kählerian geometry

Jürgen Jost

Oscillation Theory, Computation, and Methods of Compensated Compactnes

Constantine Dafermos