Ratanathavorn, W., N. Bouhod, and J. Modsuwan. “Synthesis of Silica Nanoparticles by Ultrasonic Spray Pyrolysis Technique for Cream Perfume Formulation Development”. Journal of Food Health and Bioenvironmental Science, vol. 11, no. 3, Sept. 2018, pp. 1-5, https://li01.tci-thaijo.org/index.php/sdust/article/view/183837.