Schmidt, Eduardo, and Paulo Regis Ferreira da Silva. “Effect of Density and Arrangement of Plants of Sunflower II. Agronomic Characteristics and Interception of Solar Radiation”. Pesquisa Agropecuaria Brasileira 21, no. 8 (April 17, 2014): 853–863. Accessed March 26, 2026. https://apct.sede.embrapa.br/pab/article/view/14928.