D. D. Garbuglio, A. C. Gerage, P. M. de Araújo, N. da S. F. Junior, and P. S. Shioga, “Factor analysis and bissegmented regression for studies about environmental stratification and maize adaptability”, PAB, vol. 42, no. 2, pp. 183–191, Feb. 2007, doi: 10.1590/S1678-3921.pab2007.v42.7553.