Concetto di specie e biodiversita’
Paul-Michael Agapow, Olaf R P Bininda-Emonds, Keith A Crandall, John L Gittleman, Georgina M Mace, Jonathon C Marshall, and Andy Purvis The Impact of Species Concept on Biodiversity Studies The Quarterly Review of Biology. Volume 79 number 2 (June 2004)