Watanabe, R. T.; Fioretto, R. A.; Fonseca, I. B. da; Seifert, A. L.; Santiago, D. C.; Creste, J. E.; Harada, A.; Cucolotto, M. Soybean Yield under Different Density of Populations and Cations Percentage (Ca, Mg and K) in Base Saturation. Semina: Ciênc. Agrár. 2005, 26, 477-484.