Parametric Amplification of Propagating Spin Waves in Ferrite Films B. A. Kalinikos, N. G. Kovshikov, M. P. Kostylev et H. BennerJ. Phys. IV France, 07 C1 (1997) C1-455-C1-456DOI: https://doi.org/10.1051/jp4:19971185