1. E. A. Boucher, Nucleation in the Atmosphere, in ?Nucleation?, Ed. A. C. Zettlemoyer (Marcel Dekker Inc., New York, 1969).
2. D. R. Bassett, E. A. Boucher, andA. C. Zettlemoyer,J. Colloid Interf. Sci. 27 (1968) 649.
3. Idem, ibid 34 (1970) 436.
4. W. L. De Keyser andR. Cypres,Silicates Ind. 26 (1961) 237.
5. W. D. Kingery, ?Introduction to Ceramics? (Wiley, New York, 1960) p. 137.