Priyavinit, P., and S. Ketsa. “Effect of 2-Chloroethanlphosphonic Acid (Ethephon) and Calcium Carbids on Ripening of Mangosteen Fruit after Harvest     ”. Thai Agricultural Research Journal, vol. 26, no. 1, Mar. 2008, p. 48, doi:10.14456/thaidoa-agres.2008.5.