1. MTI-EFC-NACE « Working party Expert Systems in Materials Engineering » : New Orléans, USA, 21–22 avril, (1989);
2. Glascow, Ecosse, 6–7 nov. (1989);
3. Las Vegas, Nevada, USA, 27 avril, (1990);
4. Frankfurt, Germany, 3–4 dec. (1990);
5. Toronto, Canada, 24–25 sept. (1991);