Source: https://www.researchgate.net/profile/Guillaume_Ollivier/publication/267242579_Natura_2000_et_Contrats_Territoriaux_d'Exploitation_analyse_de_deux_modes_de_construction_d'une_problematique_agriculture-conservation_de_la_nature/links/5448c36c0cf2d62c3052bd9a/Natura-2000-et-Contrats-Territoriaux-dExploitation-analyse-de-deux-modes-de-construction-dune-problematique-agriculture-conservation-de-la-nature.pdf