Reference Label	Details
Holm 1967	J. L. Holm, O. J. Kleppa, and E. F. Westrum, Jr., Geochim. Cosmochim. Acta 31, 2289-2307 (1967) Thermodynamics of Polymorphic Transformations in Silica. Thermal Properties from 5 to 1070° K and Pressure-Temperature Stability Fields for Coesite and Stishovite
Hummel 1959	C. Hummel and H. E. Schwiete, Glastech. Ber. 32, 327-335 (1959) Thermochemical Investigations in the System Na2O-SiO2. I. Heat of Solution, Calorimetric Examination of the Heats of Formation and Reaction