1. Agricultural Risk Protection Act 2000 US Public Law 106-224 http://www.aphis.usda.gov/brs/pdf/PlantProtAct2000.pdf
2. Environmental safety of biological control: policy and practice in New Zealand;Barratt;Biological Control,2005
3. Progress in risk assessment for classical biological control;Barratt;Biological Control,2010
4. Better Border Biosecurity 2014 Biological Control Information Resource for EPA Applicants http://b3.net.nz/birea/index.php
5. Guidelines on information requirements for import and release of invertebrate biological control agents in European countries;Bigler;Biological Control News and Information,2005