1. Ancient DNA Typing: Methods, Strategies and Applications;Hummel,2003
2. Molekulare Analyse von Pflanzenteilen in der Forensik;Finkeldey,2007
3. Remote collection of animal DNA and its applications in conservation management and understanding the population biology of rare and cryptic species;Piggott;Wildl. Res.,2003
4. Programme for the Endorsement of Forest Certification Schemes, PEFC, http://www.pefc.org/internet/html/index.htm.
5. The Forestry Stewardship Council, FSC, http://www.fsc.org/en/.