Yano, Gilberto Takeo, Hideaki W. Takahashi, and Toshio S. Watanabe. 2005. “Evaluation of Sources of Nitrogen and Times of Application in Top Dressing for the Cultivation of the Wheat”. Semina: Ciências Agrárias 26 (2):141-48. https://doi.org/10.5433/1679-0359.2005v26n2p141.