FARRUGIA, S.; D’ALESIO, F. Progetto FreeGIS.net: definita la Reference Implementation. GEOmedia, [S. l.], v. 15, n. 5, 2012. Disponível em: https://mediageo.it/ojs/index.php/GEOmedia/article/view/44. Acesso em: 3 dic. 2022.