สมตระกูล ข. and ฉุยฉาย ว., “Effect of Chromium on Phytoremediation of Phenanthreneand Pyrene-Contaminated Soil by Luffa acutangula and Potential of Chromium Accumulation by Plant”, KKU Sci. J., vol. 45, no. 4, pp. 873–885, Dec. 2017.