"Barents Sea opisthobranchs were recently fully reviewed in the paper:
Martynov A.V., Korshunova T.A., Savinkin O.V. 2006.
Shallow-water opisthobranch molluscs of the Murman coast of the Barents Sea, with new distributional data and remarks on biology. Ruthenica, 2006, 16(1-2): 59-72."
Comment from Alexander Martynov
Barents Sea opisthobranchs were recently fully reviewed in the paper:
Martynov A.V., Korshunova T.A., Savinkin O.V. 2006.
Shallow-water opisthobranch molluscs of the Murman coast of the Barents Sea, with new distributional data and remarks on biology. Ruthenica, 2006, 16(1-2): 59-72.