@ARTICLE{Stramska_Małgorzata_Seasonal_2013,
 author={Stramska, Małgorzata and Kowalewska-Kalkowska, Halina and Świrgoń, Marek},
 number={No55(4)},
 journal={Oceanologia},
 howpublished={online},
 year={2013},
 publisher={Instytut Oceanologii PAN},
 publisher={Komitet Badań Morza PAN},
 title={Seasonal variability in the Baltic Sea level},
 URL={http://journals.pan.pl/Content/98386/mainfile.pdf},
}