M. S. Farias Filho and A. S. de L. Ferraz Júnior, “RICE CULTIVATION IN AN EBBTIDE SYSTEM IN THE MARANHÃO LOWLANDS, SOUTHEASTERN PERIPHERY OF AMAZONIA”, Pesq. Agropec. Trop., vol. 39, no. 2, pp. 82–91, May 2009, doi: 10.5216/pat.v39i2.4597.