Breather interactions, higher-order rogue waves and nonlinear tunneling for a derivative nonlinear Schrödinger equation in inhomogeneous nonlinear optics and plasmasLei Wang, Min Li, Feng-Hua Qi and Chao GengEur. Phys. J. D, 69 4 (2015) 108DOI: https://doi.org/10.1140/epjd/e2015-50877-1