1. S. D. Stookey,Glastech. Ber., V. Sonderband, Internationaler Glaskongress32K Heft 5 (1959) 1.
2. Idem, US Patent 2920971 (1960).
3. S. D. Stookey andR. D. Maurer, “Progress in Ceramic Science”, Vol. 2 (Pergamon Press, Oxford, 1961).
4. S. D. Stookey,Chem. Eng. News 39 (1961) 116.
5. J. P. Williams andG. B. Carrier,Glass Technology 4 (1963) 183.