Hierarchical Control for Optimised Operation of a Gas Plant At Mobil Oil O. Gerbi, J. J. Leclercq, J. Papon, V. Charpentier and A. Clot Rev. Inst. Fr. Pét., 51 6 (1996) 845-854 Published online: 01 November 2006 DOI: 10.2516/ogst:1996054