Mathipikhai, Rujira, Suphalak Kotchai, and Kanchisa Naksen. “Effects of Inhaling Different Essential Oils on Autonomic Nervous System and Emotional States”. Kalasin University Journal of Science Technology and Innovation 4, no. 2 (September 10, 2025): 26–40. accessed August 31, 2026. https://li01.tci-thaijo.org/index.php/sci_01/article/view/268133.