1. Alania, M.V., Modzelewska, R., and Wawrzynczak, A., Peculiarities of cosmic ray modulation in the solar minimum 23/24, J. Geophys. Res.: Space, 2014, vol. 119, no. 6, pp. 4164–4174. doi 10.1002/2013JA019500
2. Bisi, M.M., Thompson, B.J., Emery, B.A., et al., The Sun–Earth connection near solar minimum: Placing it into context, Sol. Phys., 2011, vol. 274, nos. 1–2, pp. 1–3.
3. Cranmer, S.R., Hoeksema, J.T., Kohl, J.L., et al., SOHO-23: Understanding a peculiar solar minimum, Astron. Soc. Pac. Conf. Ser., 2010, vol. 428. CRIS/ACE. http://www.srl.caltech.edu/ACE/CRIS_SIS/cris.html.
4. Hathaway, D.H., The solar cycle, Living Rev. Sol. Phys., 2015, vol. 12, no. 4, pp. 1–87. doi 10.1007/lrsp-2015-4
5. IZMIRAN. http://cr0.izmiran.rssi.ru/common/links.htm.