1. Micropulsations and the outer radiation zone;Cornwall;Journal of Geophysical Research,1966
2. Mechanism of pearl generation and development during cyclotron instability of the outer proton zone;Feygin;Geomagnetismus und Aeronomie,1969
3. On the fine structure micropulsations of Pc1 type;Feygin;Geomagnnetismus und Aeronomie,1970
4. Pulsations of decreasing period as a proton beam instability;Feygin;Geomagnetismus und Aeronomie,1970
5. Appearance and development of geomagnetic Pc1 type micropulsations (‘‘pearls’’) due to cyclotron instability of proton belt;Feygin;Annales Geophysicae,1971