Louro, RO, Catarino T, Salgueiro CA, Legall J, Turner DL, Xavier AV.  1998.  Molecular Basis for Energy Transduction: Mechanisms of Cooperativity in Multihaem Cytochromes. Biological Electron Transfer Chains: Genetics, Composition and Mode of Operation NATO ASI Series Volume 512. (Canters, G.W., Vijgenboom, E.,  Eds.).:209-223.: Springer Netherlands