Shubnikov Institute of Crystallography, Federal Scientific Research Centre 'Crystallography and Photonics' of Russian Academy of Sciences, 59 Leninsky prospekt, 119333 Moscow, Russia
Dr. Nadezhda B. Bolotina
Shubnikov Institute of Crystallography, Federal Scientific Research Centre 'Crystallography and Photonics' of Russian Academy of Sciences, 59 Leninsky prospekt, 119333 Moscow, Russia