John Lye, of St. Catharine's, Ontario's Brock University (known to most undergrads as 'if you can walk and talk, you can go to Brock') has a neat breakdown of theoretical perspectives with relation to reader reponse criticism and theory:

Phenomenological view:
The text functions as a set of instructions for its own processing, but is as well indeterminate, needs to be completed, to be concretized. The 'reality' of the text lies between the reader and the text: it is the result of the dialectic between work and reader.

Reader Online also has a lot of information, including essays and articles. Extra neat because it is not limited to just literature.