Esin, Oleg Radievich
Khairullin, Ilshat Khamzovich
Esin, Radiy Germanovich
Article History
First Online: 5 February 2018
Compliance with Ethical Standards
:
: The authors declare that there is no conflict of interest regarding the publication of this paper.The work is performed according to the Russian Government Program of Competitive Growth of Kazan Federal University.