http://www.pictonb.freeserve.co.uk/nudibranchs/aldzet.html
http://www.ntnu.no/~vmzotbak/nudibranchia/eudoridacea/aldisa_zetlandica.htm
http://www.habitas.org.uk/marinelife/species.asp?item=W13870
http://www.medslugs.de/E/Atl-NE/Aldisa_zetlandica/Selection.htm
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