Vernetti, Veronica Peixoto, et al. “Rows and Rows-End Border Effect at Two Levels of Nitrogen on Four Cultivars of Rice in Southeast Rio Grande Do Sul, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 17, no. 2, Apr. 2014, pp. 185-94, doi:10.1590/S1678-3921.pab1982.v17.15588.