Gorbunova, M. N.
Batueva, T. D.
Article History
Received: 15 February 2019
Revised: 22 July 2019
Accepted: 20 August 2019
First Online: 6 May 2020
ACKNOWLEDGMENTS
: The authors are grateful to the Center for Shared Use “Study of Materials and Substance” of the Perm Federal Research Center, Ural Branch, Russian Academy of Sciences for spectroscopic and analytical studies.
: The study was performed within the framework of government assignment no. AAAA-A18-118030790037-7.
: The authors declare that they have no conflict of interest.