Coutinho, S. F. S., A. F. de Oliveira Neto, and E. R. Cavalcanti. “The Tourism in the Rural Zone As Instrument of Combat to the Degradation of the Lands in the Semi-Arid Northeastern”. Sociedade & Natureza, vol. 1, no. 1, May 2005, doi:10.14393/SN-v1-2005-9790.