1. Oraevsky, V.N., Sobelman, I.I.: Astron. Lett. 28, 401 (2002)
2. Zhitnik, I.A., Bougaenko, O.I., Delaboudinière, J.-P., Ignatiev, A.P., Korneev, V.V., Krutov, V.V., Kuzin, S.V., Lisin, D.V., Mitrofanov, A.V., Oparin, S.N., Oraevsky, V.N., Pertsov, A.A., Slemzin, V.A., Sobelman, I.I., Stepanov, A.I., Schwarz, J.: SPIRIT X-ray telescope/spectroheliometer results. In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9–14 September 2002, Prague, Czech Republic. Ed. A. Wilson. ESA SP-506, Vol. 2. Noordwijk: ESA Publications Division, ISBN 92-9092-816-6, 2002, p. 915–918
3. Moses, D., Clette, F., Delaboudinière, J.-P., Artzner, G.E., Bougnet, M., Brunaud, J., Carabetian, C., Gabriel, A.H., Hochedez, J.F., Millier, F., et al.: Sol. Phys. 175, 571 (1997)
4. Sobelman, I.I., Zhitnik, I.A., Valnichek, B., Rybansky, M., Bernas, M., Gaponov, S.V., et al.: Pis’ma v Astronomicheskii Zhurnal 16, 323 (1990)
5. Sobelman, I.I., Zhitnik, I.A., Ignat’ev, A.P., Korneev, V.V., Klepikov, V.Yu., Krutov, V.V., et al.: Astron. Lett. 22, 539 (1996)