Fleck, Nilson Gilberto, and Paulo Regis Ferreira da Silva. “Effect of Plant Number Per Hill in Sunflower”. Pesquisa Agropecuaria Brasileira 22, no. 3 (April 17, 2014): 281–287. Accessed July 5, 2026. https://apct.sede.embrapa.br/pab/article/view/14323.