Elementary differe ...
Methods of qualita ...
Approximation on a ...
Introduction to di ...
Numerical methods ...
The theory of part ...
Perturbations : th ...
Ordinary different ...
Fundamentals of di ...
Qualitative theory ...
Nonlinear analysis ...
Ordinary and delay ...
An introduction to ...
Lectures on the th ...
Recent advances in ...
Differential equat ...
Spatial patterns : ...