Maribel Fernández y Paula Severi.
Proceeding of Logic Based Program Development and Transformation 2002
(LOPSTR'02), a ser publicados en Lecture Notes in Computer Science.
Femke van Raamsdonk y Paula Severi.
Third International Workshop on Logical Frameworks and Meta-Languages
(LFM'02). Volumen 70.2 de Electronic Notes in Theoretical Computer Science.