1. Abdusamatov, Kh.I., Solar radiation flux decrease and Earth’s global temperature lowering down to the deep cooling in the middle of XXI century, Izv. Krymsk. Astrofiz. Observ., 2007, vol. 103, no. 4, pp. 292–298.
2. Bakulin, P.I., Kononovich, E.V., and Moroz, V.I., Kurs obshchei astronomii (Course of General Astronomy), Moscow: Nauka, 1983.
3. Beer, J., Mende, W., and Stellmacher, R., The role of the Sun in climate forcing, J. Quaternary Sci. Rev., 2000, vol. 19, pp. 403–415.
4. Borisenkov, E.P., Tsvetkov, A.V., and Agaponov, S.V., On some characteristics of insolation changes in the past and the future, Climat. Change, 1983, no. 5, pp. 237–244.
5. Borisenkov, E.P., Tsvetkov, A.V., and Eddy, J.A., Combined effects of Earth orbit perturbations and solar activity în terrestrial insolation. Pt. 1: sample days and annual mean values, J. Atmosph. Sci., 1985, vol. 42, no. 9, pp. 933–940.