Ion Implantation into Metals : Proceedings of the 3rd International Conference on Modification of Surface Properties of Metals by Ion Implantation, held at UMIST, Manchester, UK, 23-26 June 1981 - edited by V. Ashworth, W.A. Grant, R.P.M. Procter; edited by V. Ashworth, W.A. Grant, R.P.M. Procter (Pergamon Press, 1982)