All scholars should make their work freely available on the web. I give my thanks to both, the Society of Industrial and Applied Mathematics (SIAM), and Springer-Verlag, for allowing me to post free PDF versions of my books.
Here are the rules: i) you are invited to download, view, and print the books; ii) if you work in a commercial company, or in a rich institution (like a university in the developed world), and your plan is to use one of the books from time to time, please purchase it (links below).
