1. G. M. Abakumova, E. V. Gorbarenko, E. I. Nezval’, and O. A. Shilovtseva, Climate Resources of Solar Energy in the Moscow Region (Knizhnyi Dom LIBROKOM, Moscow, 2012) [in Russian].
2. G. M. Abakumova and E. V. Gorbarenko, Atmospheric Transparency over Moscow in Recent 50 Years and Its Variations on the Territory of Russia (LKI, Moscow, 2008) [in Russian].
3. Yu. V. Zhitarchuk, V. V. Stadnik, and I. N. Shanina, “The Study of Linear Trends of Solar Radiation,” Izv. Akad. Nauk, Fiz. Atmos. Okeana, No. 3, 30 (1994) [Izv., Atmos. Oceanic Phys., No. 3, 30 (1994)].
4. Climate in Saint Petersburg and Its Changes, Ed. by V. P. Meleshko, A. V. Meshcherskaya, and E. I. Khlebnikova (St. Petersburg, 2010) [in Russian].
5. E. L. Makhotkina, A. B. Lukin, I. N. Plakhina, and N. V. Pankratova, “The Analysis of Annual Variations and Interannual Variability of Aerosol Optical Depth of Atmosphere over the Territory of Russia,” Issledovanie Zemli iz Kosmosa, No. 5 (2006) [in Russian].