1. Department of Chemistry, Voronezh State University, Voronezh, Russia;
2. Department of Experimental Physics, Voronezh State University, Voronezh, Russia;
3. Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam;
4. Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam