1. Ice features and ice-thrust shore forms at Luodonselkä, Gulf of Bothnia in winter 1972/73;Alestalo;Fennia,1976
2. Great lakes ice cover;Assel,1999
3. Ice conditions in the Baltic Sea and their long-term variability;Betin;Tr. Gos. Okeanogr. Inst.,1957
4. Changing ocean, marine ecosystems, and dependent communities;Bindoff,2019
5. Spatial and interannual variations of seasonal sea surface temperature patterns in the Baltic Sea;Bradtke;Oceanologia,2010