1. Proc. 5th Int. Conf. on Erosion by Liquid and Solid Impact;Dapkumas,1079
2. Erosion by solid particle impact;Ruff;Mater. Sci. Technol.,1979
3. Proc. 6th Int. Conf. on Erosion by Liquid and Solid Impact;Tabakoff,1984
4. 8th ICAS Congress;Tilly,1972