Revised classification of aquatic alien species according to their level of impact, UKTAG (UK Technical Advisory Group on the Water Framework Directive). Available at: http://www.wfduk.org/resources/classification-alien-species-according-their-level-impact-revised-list.2015.
Practitioners guide to the infaunal quality index. Water Framework Directive: Transitional and Coastal Waters, London: UK Technical Advisory Group, Environment Agency . Available at: https://www.wfduk.org/sites/default/files/Media/Environmental standards/Annex 18 Transitional and coastal waters Invertebrates IQI.pdf.2012.
Technical Advisory Group on the Water Framework Directive; guidance on typology for coastal and transitional waters of the UK and Republic of Ireland. , pp.1-12. Available at: https://www.wfduk.org/sites/default/files/Media/Characterisation%20of%20the%20water%20environment/Marine%20typology_Final_281003.pdf.2004.