@article{oai:kitami-it.repo.nii.ac.jp:00007083, author = {T., Kashiwa and Y., Sendo and K., Taguchi and T., Ohtani and Y., Kanai}, issue = {4-2}, month = {Jul}, pages = {2125--2128}, title = {Phase velocity errors of the nonstandard FDTD method and comparison with other high-accuracy FDTD methods}, volume = {39}, year = {2003} }