D. G. Lunardi, J. E. A. dos Santos, L. L. S. do Nascimento, D. C. de Freitas, and V. de O. Lunardi, “An Assessment of the Guiana Dolphin Watching Tourism Activities at the Coastal Wildlife Reserve of Tibau do Sul (Refauts), Rio Grande do Norte State, Brazil”, SustDeb, vol. 8, no. 1, pp. 40–53, Apr. 2017.