%0 Journal Article %A Olivier Perru %T Cooperation strategies, signals and symbiosis %J Comptes Rendus. Biologies %D 2006 %P 928-937 %V 329 %N 12 %I Elsevier %R 10.1016/j.crvi.2006.02.007 %G en %F CRBIOL_2006__329_12_928_0