R. S. Fontaneli, H. P. dos Santos, M. Voss, and I. Ambrosi, “Soybean yield and nodulation in different annual winter crops under no-tillage”, PAB, vol. 35, no. 2, pp. 349–355, Feb. 2000, doi: 10.1590/S1678-3921.pab2000.v35.5760.