Reference
Technical Reports Toyota Foundation No,I-006, 76-015, Toyota Foundation, Tokyo (1981)
Ryuichi Shimizu and Shingo Ichimura
Department of Applied Physics, Faculty of Engineering, Osaka University
Surface Science 124(1983)L49
S.Ichimura R.Shimizu and J.P.Langeron
Japanese Journal of Applied Physics 22(1983)1631.
R.Shimizu