1. Evidence of Metastable Immiscibility in the System PbO-B2O3;Leidberg;J. Amer. Ceram. Soc.,1965
2. Study of Kinetics of the Metastable Phase Separation in the PbO-B2O3 System by Small-Angle Scattering of X-Rays;Zarzycki;Phys. Chem. Glasses,1967
3. 3 P. B. Macedo and J. H. Simmons , “Theoretical Analysis of Miscibility Gaps in Alkali-Borates”; to be published in the Journal of Research of the National Bureau of Standards.
4. 4 W. Haller , D. H. Blackburn , and J. H. Simmons , “Miscibility Gaps in Alkali Silicates”; submitted to Physics and Chemistry of Glasses.