Institution: | 1.Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland ;2.Oeschger Centre for Climate Change Research, University of Bern, Hochschulstra?e 4, 3012, Bern, Switzerland ;3.Institute of Archaeology, National Academy of Sciences of Ukraine, 12 Geroiv Stalingrada prospekt, Kyiv, 04210, Ukraine ; |