Lertkrai, Puriwat, Nattapong Kaewboonma, and Jutaporn Lertkrai. “The Ontology of Food and Nutrition System for Pre-School”. International Journal of Engineering and Technology 7, no. 4.19 (November 27, 2018): 476–480. Accessed February 10, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/23204.