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Dick, Bernhard and Hochstrasser, Robin M. (1984) Absorption and emission spectroscopies of homogeneous and inhomogeneously broadened multilevel systems in strong light fields. Journal of Chemical Physics 81 (7), pp. 2897-2906.
Dick, Bernhard and Hochstrasser, Robin M. (1983) Theoretical analysis of fluorescence excitation, absorption and multiphon-ionization spectra in strong light fields. Chemical Physics Letters 102 (6), pp. 484-490.