Martin Bravenboer Arthur van Dam Karina Olmos Eelco Visser Program Transformation with Scoped Dynamic Rewrite Rules. 123-178 2006 69 Fundam. Inform. 1-2 http://iospress.metapress.com/content/b05xpc3pyup7g6q9/ db/journals/fuin/fuin69.html#BravenboerDOV06