Marques da Silveira, P., José Pfeilsticker Zimmermann, F. and Morais do Amaral, A. (1998) “Effects of crop succession and systems of soil preparation on yield of upland rice”, Pesquisa Agropecuaria Brasileira, 33(6), pp. 885–890. doi: 10.1590/S1678-3921.pab1998.v33.4915.