“Effects of Hydrogen Cyanamide, Ammonium Thiosulfate, Endothalic Acid, and Sulfcarbamide on Blossom Thinning, Fruit Quality, and Yield of Apples” (2006) Journal of the American Pomological Society, 60(4), pp. 198–204. doi:10.71318/apom.2006.60.4.198.