1. O. V. Pakhomova and L. F. Chernogor, Vestnik Kharkov Univ ., No. 318, 29 (1988).
2. L. F. Chernogor, Geomagn. Aéron., 29, No. 3, 513 (1989).
3. V. A. Misyura, O. V. Pakhomova, and L. F. Chernogor, Kosmich. Nauka Tekh., No. 4, 72 (1989).
4. K.P. Garmash, A. I. Gritchin, A.A.Gubarev, et al., Trudy NIIR, No. 9, 57 (1989).
5. O. V. Pakhomova and L. F. Chernogor, Kosmich. Nauka Tekh., No. 5, 71 (1990).