Resonance energy transfer in proteins -- Unified theory and radiative and radiationless energy transfer -- Dynamics of radiative transport -- Orientational aspects in pair energy transfer -- Polarization in molecular complexes with incoherent energy transfer -- Theory of coupling in multichromophoric systems -- Exciton annihilation in molecular aggregates -- Energy transfer and localization : applications to photosynthetic systems -- Excitation energy transfer in photosynthesis -- The Fenna-Matthews-Olson protein : a strongly coupled photosynthetic antenna -- Use of a Monte Carlo method in the problem of energy migration in molecular complexes