Barnes, David K: "Accumulation and fragmentation of plastic debris in global environments", Phil. Trans. R. Soc. B, 364, pp. 1985–1998, 2002, doi10.1098/rstb.2008.0205PMID 19528051
europa.eu
ec.europa.eu
European Commission, GREEN PAPER On a European Strategy on Plastic Waste in the Environment, COM(2013)123 final, 7.3.2013, p 6.[1]Archived 2013년 12월 5일 - 웨이백 머신
Barnes, David K: "Accumulation and fragmentation of plastic debris in global environments", Phil. Trans. R. Soc. B, 364, pp. 1985–1998, 2002, doi10.1098/rstb.2008.0205PMID 19528051
web.archive.org
European Commission, GREEN PAPER On a European Strategy on Plastic Waste in the Environment, COM(2013)123 final, 7.3.2013, p 6.[1]Archived 2013년 12월 5일 - 웨이백 머신