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2. Ice phenomena on the Morskie Oko Lake in the Tatra Mountains;Choiński;Folia Geographica, Series Geographica Physica (in Polish),2006
3. Spatial analysis of ice phenology trends across the Laurentian Great Lakes region during a recent warming period;Jensen;Limnology and Oceanography,2007
4. Trends to changes in seasonal aspects of the climate of Poland;Kożuchowski;Geographia Polonica,2000
5. Hydrology;Lajczak,1996