1. Y. Arata, in Proceedings of the International Conference on Laser Advanced Materials Processing, LAMP '87, Osaka, 1987, p. 3.
2. Y. Arata, N. Abe and T. Oda, in Proceedings of the Materials Processing Symposium, ICALEO '83, Los Angeles, CA, 1983, edited by E. A. Metzbower, p. 59.
3. R. D. Dixon and G. K. Lewis, ibid. p. 44.
4. S. Kosuge, M. Ono, K. Nakada and I. Watanabe, in Proceedings of the Fifth International Congress on Applications of Laser and Electro-optics, ICALEO '86, Arlington, Virginia, 1986, edited by C. M. Banas and G. L. Whitney, p. 105.
5. J. T. Pauley and J. D. Russell, US Patent No. 4127761-A49 November (1978).