Cano , Begoña and González-Pachón , Adolfo. (2016). Plane Waves Numerical Stability of Some Explicit Exponential Methods for Cubic Schrödinger Equation.
            <i>Journal of Computational Mathematics</i>. <i>34</i> (4).
            385-406.
         doi:10.4208/jcm.1601-m4541