Verde , C., E. Cocca, D. de Pascale, E. Parisi, and G. di Frisco. “Adaptations and Lifestyle in Polar Marine Environments: A Biological Challenge for the Study of Fish Evolution”. Polar Research, vol. 23, no. 1, June 2004, pp. 3-10, doi:10.3402/polar.v23i1.6260.