Books we have found useful.

[[http://xunitpatterns.com/|xUnit Test Patterns]] by Gerard Meszaros.

  Lots of stuff about automated testing.

[[http://worldcookery.com/|Web Component Development with Zope 3]] by Philipp von Weitershausen.

[[http://martinfowler.com/books.html#refactoring|Refactoring]] by Martin Fowler

  Mandatory reading for anyone doing serious refactoring.