1. “A fuzzy/random set approach to the multiobjective optimization of uncertain mechanical systems”, at the workshop: "Multicriterion optimization of uncertain systems and structures", Istituto di Scienza e Tecnica delle Costruzioni, University of Padua, Italy, June 21, 1995.

2. " Multiobjective optimization of uncertain structures: a fuzzy set approach with application to the design of tunnel lining in hard rock ", at the workshop "A Fuzzy Seminar", Istituto di Scienza e Tecnica delle Costruzioni, University of Padua, Italy, October 2, 1995.

3. “Some applications of random and fuzzy set theories to tunneling”; Seminar held on request of GEODATA (Geoengineering Consultants), Turin, Italy, June 20, 1996.

4. “Green’s functions and BEM formulation in 3-D generally anisotropic solids”. Seminar held on request of the Technical University of Graz, Austria, June 22, 1998.

5. “Final lining ahead of a tunnel face by means of the Pretunnel system: equipment, case histories, and design procedures”. MIR 2000 – Mechanized Tunneling. Invited lecture held on request of Prof. G. Barla at the Turin Polytechnic, Italy, December 5-6, 2000.

Workshop