We have finally the paper in Fish and fisheries published; I give you the reference as the file is heawy.
PURCELL Steven W., CONAND Chantal, MERCIER Annie,
Jean-François HAMEL, TORAL-GRANDA M. Verónica, LOVATELLI Alessandro, UTHICKE
Sven. 2013. Sea cucumber fisheries: global analysis
of stocks, management measures and drivers of overfishing. Fish anf Fisheries Volume 14, Issue 1, pages 34–59