Leite, Glauber Henrique Pereira, et al. “Development and Yield of Sugarcane After Application of Plant Growth Regulators in the Midle of Crop Season”. Semina: Ciências Agrárias, vol. 32, no. 1, Mar. 2011, pp. 129-38, doi:10.5433/1679-0359.2011v32n1p129.