Numthong, C., S. Rongchana, S. Kunmaturos, and T. Phattanaphibul. “Investigation on Fabricating a Chicken Eggshells Powder Mold for Metal Casting”. Asian Health, Science and Technology Reports, vol. 29, no. 4, May 2021, pp. 13-21, doi:10.14456/nujst.2021.32.