Metamodeling Integration Architecture for Open Biomedical Ontologies: The GO Extensions' Case Study. - Marie-Noëlle Terrasse; Marinette Savonnet; Éric Leclercq; George Becker; Eric Fourmentin; Damien Lariviere; Pierre Grenon; Magali Roux-Rouquie (ER (Tutorials, Posters, Panels & Industrial Contributions), 2007)