Melo, R. P., D. Albiero, A. C. Praciano, E. S. Cavalcante, and F. R. B. Fernandes. “ANALYSIS OF QUALITY CONTROL FOR A DISC RIDGER EMPLOYED FOR A YELLOW-RED CLAY SOIL”. Revista Brasileira De Engenharia De Biossistemas, vol. 10, no. 2, June 2016, pp. 210-6, doi:10.18011/bioeng2016v10n2p210-216.