Echotrace classification and spatial distribution of pelagic fish aggregations around drifting fish aggregating devices (DFAD)Gala Moreno, Erwan Josse, Patrice Brehmer and Leif NøttestadAquat. Living Resour., 20 4 (2007) 343-356DOI: https://doi.org/10.1051/alr:2008015