1. Constraints in the restoration of ecological diversity in grassland and heathland communities;Bakker;Trends Ecol. Evol.,1999
2. Controlling the false discovery rate – a practical and powerful approach to multiple testing;Benjamini;J. Roy. Stat. Soc. Ser. B,1995
3. Die verschollenen und vom Aussterben bedrohten Blütenpflanzen und Farne der Bezirke Potsdam, Frankfurt, Cottbus und Berlin;Benkert;Gleditschia,1978
4. Council of Europe, 1979. Convention on the conservation of European wildlife and natural habitats. http://conventions.coe.int/Treaty/en/Treaties/Html/104.htm (30.08.2005)
5. European Nature Information System (EUNIS), 2005. Species factsheet for Pulsatilla patens. http://eunis.eea.eu.int/species-factsheet.jsp?idSpecies=177045&idSpeciesLink=177045 (30.08.2005).