1. Akioka, M.: 1987, private communication.
2. Ananthakrishnan, S., Coles, W. A., and Kaufman, J. J.: 1980, ?Microturbulence in Solar Wind Streams?, J. Geophys. Res. 85, 6025.
3. Armstrong, J. W., Coles, W. A., Kojima, M., and Rickett, B. J.: 1985, in R. G. Marsden (ed.), ?Solar Wind Observations Near the Sun?, The Sun and the Heliosphere in Three Dimensions, D. Reidel Publ. Co., Dordrecht, Holland, pp. 59?64.
4. Bourgois, G., Coles, W. A., Daigne, G., Silen, J., Turunen, T., and Williams, P. J.: 1985, ?Measurements of the Solar Wind Velocity with EISCAT?, Astron. Astrophys. 144, 452.
5. Bruno, R. and Burlaga, L. F.: 1982, ?Quadrupole Distortions of the Heliospheric Current Sheet?, J. Geophys. Res. 87, 10339.