Tirawanichakul, S., S. Chanchiew, and Y. Tirawanichakul. “Pennywort Drying Using Infrared Radiation: Drying Kinetics, Energy Consumption and Quality Aspect”. Asia-Pacific Journal of Science and Technology, vol. 18, no. 2, Apr. 2017, pp. 311-24, https://so01.tci-thaijo.org/index.php/APST/article/view/82850.