Kwaingjai, J., Hiranyachattada, S., Wattanapiromsakul, C. and Kumarnsit, E. (2013) “Modification of Electrical Brain Wave by Citrus sp. Essential Oil Inhalation”, Journal of Physiological and Biomedical Sciences, 26(1), pp. 5–8. available at: https://li01.tci-thaijo.org/index.php/j-pbs/article/view/250960 (accessed: 14 September 2026).