1. E. Gipstein, W. A. Hewett and O. U. Need, J. Polymer Sci., in press.
2. P. Craig et al., J. Org. Chem. 26, 135 (1961).
3. Edward M. Barrali and Richard D. Diller, Precision of Purity Determinations by Differential Scanning Calorimetry, Thermochemica Acta, in press.
4. Perkin-Elmer Corp., Norwalk, Conn., Thermal Analysis Newsletter, Nos. 1–6.
5. G. L. Driscoll, I. N. Dulling and F. Magnotta, Purity Determination Using a Differential Scanning Calorimeter, Analytical Calorimetry, R. S. Porter and J. F. Johnson eds., Plenum Press, N. Y. (1968) pp. 271–278.