de Queiroz, E.F. et al. 1996. A mathematical model for predicting dates of occurrence of phenologic stages of three soybean cultivars. Pesquisa Agropecuaria Brasileira. 31, 8 (Aug. 1996), 533–542. DOI:https://doi.org/10.1590/S1678-3921.pab1996.v31.4516.