Kaewmuangma, S., and S. Phimphilai. “Ultrasonic-assisted extraction of polyphenols and chlorophyll contents from rice seed lings (var. Sukhothai 1)”. Food and Applied Bioscience Journal, vol. 2, no. 2, Feb. 2017, pp. 152-60, doi:10.14456/fabj.2014.13.