If you want to read 3-4 papers, I suggest the following selection:
Connection to Aspect-Oriented Programming from Xerox PARC
The first book on Adaptive Programming (AP book) is available on-line and contains material from many pre-1995 papers in an integrated form.
A recent theoretical paper on traversal strategies improves on the traversal technology described in the AP book. Makes adaptive programming much simpler and more powerful. Strategies are implemented in DemeterJ (DOWNLOAD LINKS ARE HERE) .
Theory of Adaptive Programming
Search Engine. Use if to find information with keywords (CCS site).