Free electron laser infrared irradiation of molecules isolated in matrices as a tool for molecular relaxation studies P. Roubin, J.M. Berset, S. Cardonatto, H. Dubost, J. Lefèvre et J.M. Ortéga J. Phys. IV France, 04 C9 (1994) C9-385-C9-392 DOI: 10.1051/jp4:1994964