V.V. Boronoev – Dr.Sc. (Eng.), Professor, Head of Laboratory, Institute of Physical Materials Science Siberian Branch of RAS 

(Ulan-Ude)

E-mail: vboronojev2001@mail.ru

B.Z. Garmaev – Ph.D. (Phys.-Math.), Research Scientist, Institute of Physical Materials Science Siberian Branch of RAS (Ulan-Ude)

E-mail: bair.garmaev@gmail.com

V.D. Ompokov – Research Scientist, Institute of Physical Materials Science Siberian Branch of RAS  (Ulan-Ude)

E-mail: slvd@mail.ru