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