1. 33 CFR 151.3000-definition of marine debris for the purposes of the Marine Debris Research, Prevention, and Reduction Act;Cornell University School – Legal Information Institute,2006
2. UNEP/IOC guidelines on survey and monitoring of marine litter;Cheshire;UNEP Regional Seas Reports and Studies, No. 186; IOC,2009
3. Marine debris: sources, impacts, and solutions,1997
4. Marine strategy framework directive: task group 10 report marine litter;Galgani,2010
5. Type, source, and abundance of trawl-caught debris of Oregon, in the Eastern Bering Sea, and in Norton Sound in 1988;June,1990