@Article{JCM-20-3,
author = {Yi-Fa, Tang},
title = {Symplectic Computation of Hamiltonian Systems (I)},
journal = {Journal of Computational Mathematics},
year = {2002},
volume = {20},
number = {3},
pages = {267--276},
abstract = {<p style="text-align: justify;">We get $τ^6$-terms of the formal energy of the mid-point rule, and use the mathematical pendulum to test the convergence of the formal energy.</p>},
issn = {1991-7139},
doi = {https://doi.org/2002-JCM-8916},
url = {https://global-sci.com/article/85406/symplectic-computation-of-hamiltonian-systems-i}
}