Haidar Mohamad. (2019). On the Marchenko System and the Long-time Behavior of Multi-soliton Solutions of the One-dimensional Gross-Pitaevskii Equation.
            <i>Journal of Partial Differential Equations</i>. <i>28</i> (2).
            167-196.
         doi:10.4208/jpde.v28.n2.6