Dynamics of three Toda oscillators with nonlinear unidirectional coupling A. Dvorak, P. Kuzma, P. Perlikowski, V. Astakhov and T. Kapitaniak Eur. Phys. J. Special Topics, 222 10 (2013) 2429-2439 Published online: 28 October 2013 DOI: 10.1140/epjst/e2013-02027-6