1
Partial differential equations with numerical methods /
Book
...Texts in applied mathematics ;...
Table of Contents 
2
Introduction to numerical methods in differential equations /
Book
...Texts in applied mathematics ;...
Table of Contents 
3
Symmetry methods for differential equations : a beginner's guide /
Book
...Cambridge texts in applied mathematics....
4
Introduction to perturbation methods.
Book
...Texts in applied mathematics ;...