In: Cephalopod biology and fisheries in Europe: II. Species Accounts. , ed. by Jereb, P., Allcock, L. A., Lefkaditou, E., Piatkowski, U., Hastie, L. C. and Pierce, G. J. ICES Cooperative Research Report, 325 . ICES, Copenhagen, Denmark, pp. 155-166. ISBN 978-87-7482-155-7