Core Excitonic Effects in the NEXAFS Spectra of Condensed Polycyclic Aromatic Hydrocarbons H. Oji, R. Mitsumoto, E. Ito, H. Ishii, Y. Ouchi, K. Seki and N. Kosugi J. Phys. IV France, 7 C2 (1997) C2-163-C2-164 DOI: 10.1051/jp4/1997152