E. R. Hardiane, G. E. M. Purba, and A. Dahliyanti, “Transparency and Thermal Stability of Silica Aerogel Synthesized From Sodium Silicate Using Ambient Pressure Drying”, J. Emerg. Sup. Chain Clean En. and Proc. Eng. , vol. 2, no. 2, pp. 125–130, Oct. 2023.