M.A. Lutz, R.M. Feenstra, et al.
Surface Science
M.A. Lutz, R.M. Feenstra, et al.
Surface Science
R.M. Macfarlane, R.L. Cone
Physical Review B - CMMP
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
R.D. Murphy, R.O. Watts
Journal of Low Temperature Physics