21
22
23
24
Physical review / B, 103 (2021) 5, S. 054403
OpenAccess 
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
Journal of physics / Condensed matter Condensed matter, 32 (2020) S. 165902
OpenAccess  OpenAccess 
40