Transformation of Narrowband Wavetrains of Surface Gravity Waves Passing over a Bottom StepA. R. Giniyatullin, A. A. Kurkin, S. V. Semin and Y. A. StepanyantsMath. Model. Nat. Phenom., 9 5 (2014) 73-82DOI: https://doi.org/10.1051/mmnp/20149505