I would suggest the book

Nonlinear dynamics and chaos - with applications to physics, biology, chemistry, and engineering. by Steven Strogatz

and, if you are interested in networks, nonlinearities and applications in general I can suggest to visit the website of A. Vespignani

http://www.mobs-lab.org/alessandro-vespignani.html

Thanks a lot.

Hi.

See for example ""Nonlinear System Identification: From Classical Approaches to Neural Networks and Fuzzy Models

Oliver Nelles""

or

""dentification of Nonlinear Systems Using Neural Networks and Polynomial Models: A Block-Oriented Approach

Andrzej Janczak ""

Be happy