Rogue wave signals in a coupled anharmonic network: effects of the transverse direction S. A. T. Fonkoua, F. B. Pelap, G. R. Deffo and A. Fomethé Eur. Phys. J. Plus, 136 4 (2021) 416 Published online: 20 April 2021 DOI: 10.1140/epjp/s13360-021-01376-1