Keitel, Christoph H. Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;
http://link.aps.org/doi/10.1103/PhysRevA.55.3802 (Publisher version)
Saavedra, C., Retamal, J. C., & Keitel, C. H. (1997). Strong intracavity and output laser noise reduction via initial atomic coherence. Physical Review. A, 55(5), 3802-3812. doi:10.1103/PhysRevA.55.3802.