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Plikk, A. and Engels, Stefan and Luoto, T.P. and Nazarova, L. and Salonen, S.J. and Helmens, K.F. (2019) Chironomid-based temperature reconstruction for the Eemian Interglacial (MIS 5e) at Sokli, northeast Finland. Journal of Paleolimnology 61 , pp. 355-371. ISSN 0921-2728.

Helmens, K.F. and Katrantsiotis, C. and Salonen, S.J. and Shala, S. and Bos, J.A.A. and Engels, Stefan and Kuosmanen, N. and Luoto, T.P. and Väliranta, M. and Luoto, M. and Ojala, A. and Risberg, J. and Weckström, J. (2018) Warm summers and rich biotic communities during N-Hemisphere deglaciation. Global and Planetary Change 167 , pp. 61-73. ISSN 0921-8181.

Helmens, K.F. and Salonen, S.J. and Plikk, A. and Engels, Stefan and Valiranta, M. and Kylander, M. and Brendryen, J. and Renssen, H. (2015) Major cooling intersecting peak Eemian Interglacial warmth in northern Europe. Quaternary Science Reviews 122 , pp. 293-299. ISSN 0277-3791.

Engels, Stefan and Self, A.E. and Luoto, T.P. and Brooks, S.J. and Helmens, K.F. (2014) A comparison of three Eurasian chironomid–climate calibration datasets on a W–E continentality gradient and the implications for quantitative temperature reconstructions. Journal of Paleolimnology 51 , pp. 529-547. ISSN 0921-2728.

Helmens, K.F. and Valiranta, M. and Engels, Stefan and Shala, S. (2012) Large shifts in vegetation and climate during the Early Weichselian (MIS 5d-c) inferred from multi-proxy evidence at Sokli (northern Finland). Quaternary Science Reviews 41 , pp. 22-38. ISSN 0277-3791.

Van Meerbeeck, C. and Renssen, H. and Roche, D. and Wohlfarth, B. and Bohncke, S.J.P. and Bos, J.A.A. and Engels, Stefan and Helmens, K.F. and Sanchez-Goni, M.F. and Svensson, A. and Vandenberghe, J. (2011) The nature of MIS 3 stadial-interstadial transitions in Europe: New insights from model-data comparisons. Quaternary Science Reviews 30 , pp. 3618-3637. ISSN 0277-3791.

Engels, Stefan and Helmens, K.F. and Valiranta, M. and Brooks, S.J. and Birks, H.J.B. (2010) Early Weichselian (MIS 5d and 5c) temperatures and environmental changes in northern Fennoscandia as recorded by chironomids and macroremains at Sokli, northeast Finland. Boreas 39 (4), pp. 689-704. ISSN 0300-9483.

Helmens, K.F. and Engels, Stefan (2010) Ice-free conditions in eastern Fennoscandia during early Marine Isotope Stage 3: lacustrine records. Boreas 39 (2), pp. 399-409. ISSN 0300-9483.

Valiranta, M. and Birks, H.H. and Helmens, K.F. and Engels, Stefan and Piirainen, M. (2009) Early Weichselian interstadial (MIS 5c) summer temperatures were higher than today in northern Fennoscandia. Quaternary Science Reviews 28 (9-10), pp. 777-782. ISSN 0277-3791.

Engels, Stefan and Bohncke, S.J.P. and Bos, J.A.A. and Brooks, S.J. and Heiri, O. and Helmens, K.F. (2008) Chironomid-based palaeotemperature estimates for northeast Finland during Oxygen Isotope Stage 3. Journal of Paleolimnology 40 , pp. 49-61. ISSN 0921-2728.

Helmens, K.F. and Bos, J.A.A. and Engels, Stefan and Van Meerbeeck, C. and Bohncke, S.J.P. and Renssen, H. and Heiri, O. and Brooks, S.J. and Seppa, H. and Birks, H.J.B. and Wohlfarth, B. (2007) Present-day temperatures in northern Scandinavia during the Last Glaciation. Geology 35 (11), pp. 987-990. ISSN 0091-7613.