61
62
63
64
65
66
67
68
69
70
71
72
73
74
Physical Review B Physical review / B, 66 66 (2002 2002) 18 18, S. 184406 184406
OpenAccess 
75
76
Kocan, M.
2002
Physica status solidi / B, 234 (2002) S. 773 - 777
77
78
79
80