@misc{https://doi.org/10.17632/s4s7gffj8s.1, doi = {10.17632/S4S7GFFJ8S.1}, url = {https://data.mendeley.com/datasets/s4s7gffj8s/1}, author = {Wu, Dongmei}, keywords = {Computational Physics, Computer Algebra System}, title = {A Mathematica program for the approximate analytical solution to a nonlinear undamped Duffing equation by a new approximate approach}, publisher = {Mendeley}, year = {2019} }