A. F. Lantmann, M. C. Neves de Oliveira, A. C. Roessing, and G. J. Sfredo, “Productivity of wheat following non-fetilized soybean in a dystrophic Dusky Red Latosol”, PAB, vol. 32, no. 3, pp. 257–265, Mar. 1997, doi: 10.1590/S1678-3921.pab1997.v32.4634.