A new state-observer of the inner PEM fuel cell pressures for enhanced system monitoringOlivier Bethoux, Emmanuel Godoy, Ivan Roche, Bruno Naccari, Miassa Amira Taleb, Mohamad Koteiche and Younane NassifEur. Phys. J. Appl. Phys., 66 3 (2014) 30901DOI: https://doi.org/10.1051/epjap/2014130167