1. Naakenavaara Interglacial — a till-covered peat deposit in western Finnish Lapland;Aalto;Bulletin of the Geological Society of Findand,1992
2. Till stratigraphy and ice recession in the Bothnian Bay;Andrén;University of Stockholm, Department of Quaternary Research, Report,1990
3. The last glaciation in West Siberia;Astakhov;Sveriges Geologiska Undersökning,1992
4. Biostratigraphy of the last glacial period;Behre;Quaternary Science Reviews,1989
5. The deglaciation of southern Sweden 13,500-10,000 B.P.;Berglund;Boreas,1979