Physical Review b, vol. 94, no. 18, page. 184402, 2016-11-03
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, vol. 531, no. 2, page. 89 - 113, 2013-10-10
PHYSICAL REVIEW B, vol. 88, no. 18, page. 184404, 2013-11-04