Comparing the photophysics of the two forms of the Orange Carotenoid Protein using 2D electronic spectroscopyE. De Re, G.S. Schlau-Cohen, V.M. Huxter, R.L. Leverenz, R.A. Mathies and G.R. FlemingEPJ Web of Conferences, 41 (2013) 08008DOI: https://doi.org/10.1051/epjconf/20134108008