Funding for this research was provided by:
Russian Science Foundation (18-73-10088)
Ministry of Science and Higher Education of the Russian Federation (3.5283.2017/6.7)
Article History
First Online: 16 September 2019
Compliance with Ethical Standards
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: This work was supported by the Russian Science Foundation (project no. 18-73-10088). V.V.K. acknowledges the state assignment in the sphere of scientific activities (project no. 3.5283.2017/6.7).