@proceedings{165, author = {Luis Martínez and M.D. Muñoz and Pedro José Sánchez}, title = {Un Sistema de Tutoria Electrónica basado en Grupos de Trabajo y Filtros de Correo}, year = {1999}, pages = {189-198}, month = {September}, publisher = {EDUTEC 99}, address = {Sevilla (Spain)}, }