1. Okazaki, S. (1991) J. Vac. Sci. Technol.
B
9 (6), pp. 2829–2833
2. Coopmans, F. and Roland B. (1987) Solid State Technology, June, p 93.
3. Maaike Op de Beeck and Luc Van den Hove, (1992) J. Vac. Sci. Technol.
B 9 (6)
4. Tennant, D.M. et al., J. Vac. Sci. Technol., (1991) B 9 (6), pp. 3176–3183
5. Kurihara, K., Kinoshita, H., Mizota, T., Haga, T. and Torii, Y. (1991) J. Vac. Sci. Technol.
B 9 (6), pp. 3189–3192