I've been invited by Jacques Malenfant to collaborate on works related to the study of reflexion. In the context of our works on classless and prototype-based languages, it indeed appeared that such languages offer a simpler framework than class-based ones to study behavioral reflexion.

Behavioral Reflection in a Prototype-Based Language - RISE '92 - postscript
A semantic of introspection in a prototype-based language - LASC'96 - postscript

Collaboration : Pierre Cointe, Jacques Malenfant.