A. V. Saccol and V. Estefanel, “Competition between barnyardgrass and soybean cultivated in hydromorphic soil. II. Effect on some agronomic characteristics”, PAB, vol. 30, no. 3, pp. 327–338, Mar. 1995, doi: 10.1590/S1678-3921.pab1995.v30.4311.