Lucas, Fábio Teixeira, et al. “Yield and Quality of Canola Grains Due to Nitrogen and Sulfur Fertilization”. Semina: Ciências Agrárias, vol. 34, no. 6Supl1, Dec. 2013, pp. 3205-18, doi:10.5433/1679-0359.2013v34n6Supl1p3205.