Song , MingzhanQian , XuZhang , Hong and Song , Songhe. (2018). Hamiltonian Boundary Value Method for the Nonlinear Schrödinger Equation and the Korteweg-de Vries Equation. Advances in Applied Mathematics and Mechanics. 9 (4). 868-886. doi:10.4208/aamm.2015.m1356