1. On the polarization, compression and nonoscillatory behavior of hydromagnetic waves associated with pickup ions;Brinca;Geophys. Res. Lett.,1987
2. Unusual characteristics of electromagnetic waves excited by cometary newborn ions with large perpendicular energies;Brinca;Astron. Astrophys.,1987
3. Survey of low-frequency electromagnetic waves stimulated by two coexisting newborn ion species;Brinca;J. Geophys. Res.,1988
4. Observations of heavy pick-up ions at Halley: Pitch angle and energy distributions;Coates,1989
5. Alfvén waves in a space plasma and its role in the solar wind interaction with comets;Galeev;Astrophys. Space Sci.,1988