1. L. H. Aller, Atoms, Stars and Nebulae (Blackiston, Philadelphia, 1943; Mir, Moscow, 1976).
2. I. N. Atroshchenko, A. S. Gadun, S. I. Gopasyuk, et al., Variations in the Global Characteristics of the Sun, Ed. by E. A. Gurtovenko (Nauk. Dumka, Kiev, 1991) [in Russian].
3. K. A. Burlov-Vasil’ev, I. E. Vasil’eva, and Yu. B. Matveev, “New measurements of the absolute spectral energy distribution of solar radiation in the range= 650–1070 nm,” Kinematika Fiz. Nebesnykh Tel 12 (3), 75–91 (1996).
4. M. V. Vavrukh and O. M. Stel’makh, “Photoionization cross-section of negative hydrogen ions,” Visn. L’viv. Univ., Ser. Fiz. 47, 3 (2012).
5. M. V. Vavrukh and O. M. Stel’makh, “The cross-sections of the main processes that forms the continuous absorption coefficient in the photosphere of Sun-like stars,” Zh. Fiz. Dosl. 17, 4902 (2013).