1. AMRF (Algalita Marine Research Foundation), 2008. Plastic Debris from River to Sea (leaflet). pp. 2. uploaded upon website on April 2, 2008.
2. Microplastics in the marine environment;Andrady;Mar. Pollut. Bull.,2011
3. Seasonal evolution of beach waste and litter during the bathing season on the Catalan coast;Ariza;Waste Manage.,2008
4. Cantin, J., Eyraud, J., Fenton, C., 1990. Quantitative estimates of garbage generation and disposal in the US maritime sectors before and after MARPOL Annex V. In: Shomura, R.S., Godfrey, M.L. (Eds.), Proceedings of the Second International Conference on Marine Debris, 2–7 April 1989, Honolulu, Hawaii. U.S. Dep. Commer., NOAA Tech. Memo. NMFS, NOAA-TM-NMFS-SWFSC-154, pp. 119–181.
5. Cheshire, A.C., Adler, E., Barbiere, J., Cohen, Y., Evans, S., Jarayabhand, S., Jeftic, L., Jung, R.T., Kinsey, S., Kusui, T.E., Lavine, I., Manyara, P., Oosterbaan, L., Pereira, M.A., Sheavly, S., Tkalin, A., Varadarajan, S., Wenneker, B., Westphalen, G., 2009. UNEP/IOC Operational Guidelines on Survey and Monitoring of Marine Litter. UNEP Regional Seas Report No. 186. IOC Technical Series No. 83, pp. xii+120.