1. Carr, T. D. and Gulkis, S.: 1969, Ann. Rev. Astron. Astrophys. 7, 577.
2. Chang, D. B. and Davis, L.: 1962, Astrophys. J. 136, 567.
3. Mead, G. D.: 1973, ‘Magnetic Coordinates for the Pioneer 10 Jupiter Flyby’, unpublished memorandum, Goddard Space Flight Center, April.
4. Mcllwain, C. E.: 1961, J. Geophys. Res. 66, 3681.
5. Ortwein, N. R., Chang, D. B., and Davis, L., Jr.: 1966, Astrophys. J. Suppl. Ser. 12, 323.