Sub-Picosecond Time-Resolved Spectroscopy of Energetic Materials : the Nitromethane and Nitro-Stilbenes C. Rajchenbach, G. Jonusauskas et C. Rulliere J. Phys. IV France, 05 C4 (1995) C4-365-C4-378 DOI: 10.1051/jp4:1995429