@ARTICLE{Eyvind_Aas_Optical_2013,
 author={Eyvind Aas and Højerslev, Niels Kristian and Jo Høkedal and Kai Sørensen},
 volume={Vol. 55},
 number={Iss. 2},
 journal={Oceanologia},
 howpublished={online},
 year={2013},
 publisher={Instytut Oceanologii PAN},
 publisher={Komitet Badań Morza PAN},
 title={Optical water types of the Nordic Seas and adjacent areas},
 URL={http://www.journals.pan.pl/Content/100045/mainfile.pdf},
}