Nakaruk, A., T. Threrujirapapong, D. Channei, and W. Khanitchaidecha. “A Potential of Vetiver Grass for Feldspar Replacement in Ceramic Processing”. Naresuan University Engineering Journal, vol. 10, no. 2, Dec. 2015, pp. 43-45, doi:10.14456/nuej.2015.10.