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3. BARKER, J. E., KEENAN, M. A. & RAPHALS, L.; (1969) J. Cell. Physiol. 74, 51.
4. FANTONI, A., de la CHAPELLE, A., CHUI, D., RIFKIND, R. A. & MARKS, P. A.; (1969). Ann. N. Y. Acad. Sci. 165, 194.
5. de la CHAPELLE, A., FANTONI, A. & MARKS, P.A.; (1969) Proc. Nat. Acad. Sci. U.S. 63, 812.