dos Santos, H. P., Fancelli, A. L. and Reis, E. M. (1994) “Energetic balance for crop rotation systems to wheat under no-tillage”, Pesquisa Agropecuaria Brasileira, 29(7), pp. 1067–1073. doi: 10.1590/S1678-3921.pab1994.v29.4149.