Tzedakis, Polychronis C (1993): Long-term tree populations in northwest Greece through multiple Quaternary climatic cycles. Nature, 364, 437-440, doi:10.1038/364437a0
Tzedakis, Polychronis C (1994): Vegetation change through glacial-interglacial cycles: a long pollen sequence perspective. Philosophical Transactions of the Royal Society B-Biological Sciences, 345(1314), 403-432, doi:10.1098/rstb.1994.0118