1. Cox, R. P., Krause, M. R., Balis, M. E., and Dancis, J. in Cell Communication, (edit. by Cox, R. P.), 67–95 (Wiley, New York. 1974).
2. Subak-Sharpe, J. H., Burke, R. R., and Pitts, J. D., J. Cell Sci., 4, 353–367 (1969).
3. Seegmiller, J. E., Rosenbloom, F. M., and Kelley, W. N., Science, 155, 1682–1684 (1967).
4. Cox, R. P., Krause, M. R., Balis, M. E., and Dancis, J., Expl Cell Res., 74, 251–268 (1972).
5. Pitts, J. D., in Growth Control in Cell Cultures, Ciba Foundation Symposium, (edit. by Wolstenholme, G. E. W., and Knight, J.), 89–98 (Churchill and Livingstone, London, 1971).