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2. Proceed. “First Int. Conf. on Shot Peening”, Pergamom Press, Oxford (1982).
3. Proceed. “Second Int. Conf. on Shot Peening”, The American Shot Peening Society, Paramus, N.Y. (1984).
4. Proceed. “Third Int. Conf. on Shot Peening”, DGM Informationsgesellschaft Verlag, Oberursel (1987).
5. Proceed. “Fourth Int. Conf. on Shot Peening”, The Japan Society of Precision Engineering. Tokyo (1990).