ASPIS: A Knowledge-Based CASE Environment. - P. Paolo Puncello; Piero Torrigiani; Francesco Pietri; Riccardo Burlon; Bruno Cardile; Mirella Conti (IEEE Softw., 1988)

An Integrated Expert-System Builder. - Alessandra Cherubini; Laura Fanti; Piero Torrigiani; Massimo Zallocco (IEEE Softw., 1989)

Graspin: A Structured Development Environment for Analysis and Design. - Stefano Mannucci; Bruno Mojana; Maria Cristina Navazio; Valerio Romano; Maria Carla Terzi; Piero Torrigiani (IEEE Softw., 1989)