Leisner, Melvin, and Davis Pereira de Paula. “Social and Recreational Value of Waves: Application of the Zonal Travel Cost Method With Surfers from Icaraí Beach (Caucaia, Ceará, Brazil)”. Ateliê Geográfico Journal, vol. 15, no. 1, Apr. 2021, pp. 26-49, https://doi.org/10.5216/ag.v15i1.66540.