text: * [http://outfalls.ifh.uni-karlsruhe.de/links.htm IWA Committee on Marine Outfall Systems]
  * [https://web.archive.org/web/20100206083658/http://www.bvsde.paho.org/bvsaca/i/fulltext/alternai/alternai.pdf Salas, Henry J.:Submarine outfalls a viable alternative for sewage discharge of coastal cities in Latin America and the Caribbean], Lima; CEPIS, 2000