1. Indicators for each Publication are Calculated: Research Interest, Citations, Recommendations, Reads. https://www.researchgate.net. Accessed 2020.
2. For Candidates for Elections to RAS 2019 the Indicators are Calculated: The Number of Publications, Citations Included in the Core of RSCI, Hirsch Index on the Core of RSCI. https://www.elibrary.ru/kand_ras_2019.asp. Accessed 2020.
3. My Reports, My Page. https://istina.msu.ru/home/reports. Accessed 2020.
4. Section Personalities, Statistics Publications and Views in MathSciNet, in zbMATH, in Web of Science, in Scopus. http://www.mathnet. ru. Accessed 2020.
5. Web of Science, Statistics and Graphics. https://publons.com/researcher. Accessed 2020.