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