“Effects of Hydrogen Cyanamide, Ammonium Thiosulfate, Endothalic Acid, and Sulfcarbamide on Blossom Thinning, Fruit Quality, and Yield of Apples”. Journal of the American Pomological Society, vol. 60, no. 4, Oct. 2006, pp. 198-04, https://doi.org/10.71318/apom.2006.60.4.198.