Available on-line: [http://www.clr.pdx.edu/docs/CLR_nutria_report.pdf]* History, distribution and spread of coypu introductions worldwide; efforts to eradicate with links to other nutria sites* The Effect of Nutria on Marsh Loss in the Lower Eastern Shore of Maryland undated USGS report* Portland State University Report on coypus in the Pacific Northwest of North America.
Available on-line: [http://www.clr.pdx.edu/docs/CLR_nutria_report.pdf]== External links ==*History, distribution and spread of coypu introductions worldwide; efforts to eradicate with links to other nutria sites* The Effect of Nutria on Marsh Loss in the Lower Eastern Shore of Maryland undated USGS report*Portland State University Report on coypus in the Pacific Northwest of North America.