Stabilizing the intensity of a wave amplified by a beam of particlesR. Bachelard, A. Antoniazzi, C. Chandre, D. Fanelli, X. Leoncini and M. VittotEur. Phys. J. D, 42 1 (2007) 125-132DOI: https://doi.org/10.1140/epjd/e2006-00276-x