1. Anderson, N. G. 1962. The zonal ultracentrifuge. A new instrument for fractionating mixtures of particles. J. Phys. Chem., 66:1984–1989.
2. Avis, P. J. G. 1969. In: Subcellular Components,pp. 1–14. Ed. by Birnie, G. D. and Fox, S. M. Plenum Press, New York.
3. Bo, W. J. and Smith, M. S. 1964. Glycogen synthetase in the rabbit tongue and uterus. Anat. Record., 148:503–505.
4. Cline, G. B. 1971. Continuous sample flow density gradient centrifugation. In: Progress in Separation and Purification. John Wiley & Sons, Inc., New York.
5. Ecobichon, D. J. and Kalow, W. 1965. Properties and classification of the soluble esterases of human skeletal and smooth muscle.Can. J. Biochem., 43:13–19