1. Laboratory on Metallic materials with spatial gradient structure, Togliatti State University, Togliatti, Russian Federation
2. Division of Physics of Dielectric and Semiconductors, Ioffe Institute, St. Petersburg, Russian Federation
3. Laser Photonics and Optoelectronics Department, ITMO University, St. Petersburg, Russian Federation
4. Laboratory of Mechanics and Materials, Polytechnic School, Aristotle University of Thessaloniki, Thessaloniki, Greece