Authors
A. Zhukov
Dpto. Fisica de Materiales Basque Country University, UPV/EHU, and IKERBASQUE, San Sebastian and Bilbao, Biscay, Spain
A. Talaat
Dpto. Fisica de Materiales Basque Country University, UPV/EHU, Biscay, Spain
M. Ipatov
Dpto. Fisica de Materiales Basque Country University, UPV/EHU, Biscay, Spain
V. Zhukova
Dpto. Fisica de Materiales Basque Country University, UPV/EHU, Biscay, Spain