José Juan de Sanjosé Blasco, et al. “Geomatics Techniques for Monitoring the Retreat of Coastal Sandy Systems: Somo Beach (Cantabrian Coast, Spain, 1875–2017) ”. Newest Updates in Physical Science Research Vol. 8, June 2021, pp. 30-50, doi:10.9734/bpi/nupsr/v8/1775F.