1. On the Kinetic Balance in the Abovemaximal Part of the Daily F-Region;Serafimov;Compt. Rend. Acad. Bulg. Sci.,1983
2. Averaged Wind Magnitudes in Circummaximal F-Region of Ionosphere;Serafimov;Compt. Rend. Acad. Bulg. Sci.,1985
3. On the Problem of Wave Process Dynamics in the Nighttime F-Region of the Ionosphere;Chechoshvili;Ionosfernie Issled.,1984
4. On an Approximate Solution of Continuity Equation for the Ionospheric Plasma of the F-Region during the Night;Gachechiladze;Ionosfernie Issled.,1984
5. On the Formation of Structures of Topside Ionosphere;Serafimov;Compt. Rend. Acad. Bulg. Sci.,1986