F. N. de Oliveira, S. B. Torres, F. E. R. Vieira, E. P. de Paiva, and A. S. Dutra, “Physiological quality of sunflower seeds according to electrical conductivity”, Pesq. Agropec. Trop., vol. 42, no. 3, pp. 279–287, Sep. 2012, doi: 10.5216/pat.v42i3.17793.