1. The share of organizations that carried out technological innovations in the reporting year in the total number of surveyed organizations (p 2010 г.). Science, innovation and technology. Federal State Statistics Service, (2020). https://rosstat.gov.ru/statistics/science. Last accessed 23 Mar 2022
2. Myrdal, G.: Asian drama: An inquiry into the poverty of nations, vol. I-III, p. 850. Twentieth Century Fund, N. Y. (1968)
3. Frolov, D.P., Volkov, S.K., Akimova, O.E.: Ecosystems of old industrial cities: complexity and multifacetedness of urban shrinkage. In: Polyakov, R. (eds). Ecosystems Without Borders. EcoSystConfKlgtu 2021. Lect. Notes Netw. Syst. 474, 73–88. Springer, Cham (2021)
4. Rating of investment attractiveness of regions RAEX for 2020. RAEX-Analytics, https://raex-a.ru/ratings/regions/2020. Last accessed 23 Mar 2022
5. Frolov D.P., Volkov S.K., Akimova O.E.: Shrinking old industrial cities: a research agenda for heterodox economics. Montenegrin J Econ 18(2), 103–112