Quantum state of an injected TROPO above threshold: purity, Glauber function and photon number distributionT. Golubeva, Yu. Golubev, C. Fabre and N. TrepsEur. Phys. J. D, 46 1 (2008) 179-193DOI: https://doi.org/10.1140/epjd/e2007-00290-6