Model calculation of the optical properties of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) thin filmsI. Vragović, R. Scholz and M. SchreiberEurophys. Lett., 57 2 (2002) 288-294DOI: https://doi.org/10.1209/epl/i2002-00574-3