A.J. Vredenberg, F.Z. Cui, F.W. Saris, N.M. van der Pers and P.F. Colijn, Microstructure and hardness of titanium and iron surfaces after megaelectronvolt nitrogen implantation, Mater. Sci. Eng. A, 297-302 (1989)
P.J. van den Hoek, E.J. Baerends and R.A. van Santen, Ethylene epoxidation on Ag(110): the role of subsurface oxygen, J. Phys. Chem. 93, 6469-6475 (1989)
H.B. Gilbody, A. Salin, R. Aumayr, A. Bürüny, D.S. Belkic, F.J. de Heer, R. Hoekstra, R.K. Janev, Y. Nakai, R.D. Rivarola, H. Tawara and T. Watanabe, Review of the data base for collisions of Cq+ and Oq+ ions with H, H2 and He, Phys. Scr. T28, 8-9 (1989)
A.J.H. Donn, F.J. de Heer and R.E. Olson, The role of small-impact-parameter electron-loss processes on ion temperatures measured by active-beam plasma diagnostics, J. Appl. Phys. 65, 57-63 (1989)
A.A. Williams, J.E. MacDonald, R. van Silfhout, J.F. van der Veen, A.D. Johnson and C. Norris, The initial stages of growth of Ge on Si(001) studied by x-ray diffraction, J. Phys.: Condens. Matter 1, 273-274 (1989)
W.H. Urbanus, R.-G.C. Wojke, R.J.J.M. Steenvoorden, J.G. Bannenberg, H. Klein, A. Schempp, R.W. Thomae, T. Weis and P.W. van Amersfoort, Simultaneous transport of N+ and N2+ ions through a periodic focusing quadrupole channel, Nucl. Instrum. Methods Phys. Res. A 276, 433-444 (1989)
P.H.F. Reijnen, P.J. van den Hoek, A.W. Kleyn, U. Imke and K.J. Snowdon, The O2-Ag(111) interaction studied by 100-3000 eV glancing incidence O2+ scattering, Surf. Sci. 221, 427-453 (1989)
