1. Fujita, H., Mathematical Theory of Sedimentation Analysis (Academic Press, New York, 1962).
2. Archibald, W. J., Ann. N.Y. Acad. Sci., 43, 211 (1942).
3. Fujita, H., J. Chem. Phys., 24, 1084 (1956).
4. Weiss, G. H., J. Math. Phys. (in the press).
5. Billick, I., and Weiss, G. H., J. Res. Nat. Bur. Stand., A (in the press).