Sampaio, Deusiane Batista, et al. “Rates of Paclobutrazol on Soil Microbial Biomass”. Semina: Ciências Agrárias, vol. 31, no. 4Sup1, Feb. 2011, pp. 1349-54, doi:10.5433/1679-0359.2010v31n4Sup1p1349.