Muñoz-Perez, J. J., A. Payo, J. Roman-Sierra, M. Navarro, and L. Moreno. “Optimization of Beach Profile Spacing: An Applicable Tool for Coastal Monitoring”. Scientia Marina, vol. 76, no. 4, Dec. 2012, pp. 791-8, doi:10.3989/scimar.03417.15A.