1. Holism vs. Reductionism: Do Ecosystem Ecology and Landscape Ecology Clarify the Debate?;Donato Bergandi;Acta Biotheoretica,1998
2. De l'�cosyst�me � l'�cocomplexe;Patrick Blandin;Sciences de La Nature, Sciences de La Soci�t� : Les Passeurs de Fronti�res,1992
3. De La Protection de La Nature Au Pilotage de La Biodiversit�;Sciences En Questions,2009
4. The Value of Ecosystem Health;J Callicott;Environmental Values,1995
5. Current Normative Concepts in Conservation;J Callicott;Conservation Biology,1999