21
22
23
Journal of physics / Condensed matter, 28 (2016) 47, S. 476001
24
25
26
27
28
29
Journal of physics / Conference Series, 711 (2016) S. 012008
OpenAccess 
30
Physical Review E Physical review / E, 91 91 (2015 2015) 2 2, S. 022716 022716
OpenAccess 
31