Ulguim, André da Rosa, et al. “Does Competition Between Soybeans and Wild Poinsettia With Low-Level Resistance or Susceptibility to Glyphosate Affect Physiology and Secondary Metabolism?”. Semina: Ciências Agrárias, vol. 38, no. 3, June 2017, pp. 1133-44, doi:10.5433/1679-0359.2017v38n3p1133.