1. Geomorphology of the Romanian Carpathians. New trends and evolutions;Balteanu;Studia Geomorphologica Carpatho-Balcanica,1998
2. The rate of spread and population increase of forest trees during the postglacial;Bennett;Philosophical Transactions of the Royal Society of London, B,1986
3. Quaternary refugia of north European trees;Bennett;Journal of Biogeography,1991
4. Pollen analysis and pollen diagrams;Berglund,1986
5. Berglund, B.E., Birks, H.J.B., Ralska-Jasiewiczowa, M., Wright, H.E. (Eds.), 1996. Palaeoecological events during the last 15000 years: Regional syntheses of palaeoecological studies of lakes and mires in Europe. Wiley, Chichester, p. 764.