Borja, A.; Franco, J.; Pérez, V. (2000). A Marine Biotic Index to Establish the Ecological Quality of Soft-Bottom Benthos Within European Estuarine and Coastal Environments. <em>Marine Pollution Bulletin.</em> 40(12), 1100-1114 + updated in <a href="http://ambi.azti.es" target="_blank">http://ambi.azti.es</a> (AMBI list of June 2017).[details]