В. А. Белкин, “CYCLES OF MACROECONOMIC INDICATORS AND SOLAR ACTIVITY: MECHANISM AND FACTS OF STRONG STABLE RELATIONS (1867-2014 YEARS)”, Социум и власть, vol. 53, no. 3, pp. 90–98, Mar. 2015, Accessed: Nov. 07, 2026. [Online]. Available: https://socium-vlast.owebs.ru/article/view/28221