1. Aoki, S., 1988, Relation between the celestial reference system and the terrestrial reference system of a rigid Earth, Celes. Mechan., in press.
2. Aoki, S. and Kinoshita, H., 1983, Celes. Mechan., 29, 335.
3. Aoki, S., Guinot, B., Kaplan, G., Kinoshita, H., McCarthy, D. and Seidelmann, P., 1982, Astron. Astrophys., 105, 359.
4. Arias, E., Feissel, M. and Lestrade, F., 1988a, in BIH Annual Report for 1987, Paris.
5. Arias, E., Lestrade, F. and Feissel, M., 1988b, in Wilkins and Babcock (eds.), Reidel.