Dynamical behaviour of solitons in a 𝒫𝒯-invariant nonlocal nonlinear Schrödinger equation with distributed coefficientsKannan Manikandan, Seenimuthu Stalin and Murugaian SenthilvelanEur. Phys. J. B, 91 11 (2018) 291DOI: https://doi.org/10.1140/epjb/e2018-90234-2