A. P. Ruschel and P. A. da Eira, “Nitrogen fixation in soybeans (Glycine max (L.). Merril): influence of the application of calcium to the soil and molybdenum applied in seed’s pellet”, PAB, vol. 4, no. 1, pp. 103–107, Apr. 2014, doi: 10.1590/S1678-3921.pab1969.v4.17804.