Zaffaroni, Eduardo, Marcos A. V. Silva, and Pedro V. de Azevedo. “Agroclimatic Potential of Sunflower in Paraiba State, Brazil. I. Temperature and Solar Radiatio”. Pesquisa Agropecuaria Brasileira 29, no. 10 (October 1, 1994): 1483–1491. Accessed November 14, 2025. https://apct.sede.embrapa.br/pab/article/view/4199.