1. submitted to the 10th Internat. Conf. on the Physics of electronic and atomic collisions;Schlachter,1977
2. J.R. Hiskes, Lawrence Livermore Laboratory Report UCIR-853.
3. K.H. Berkner, D. Leung, R.V. Pyle, A.S. Schlachter and J.W. Stearns, to be published in Nucl. Instr. Methods, and references therein.
4. Charge-state distributions in collisions of H and He with magnesium