Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ANDO Yoshiaki and MACHII Noritoyo and HAYAKAWA Masashi,An analysis on perturbations of the Earth-Ionosphere waveguide propagation in the VLF band by using FDTD method,"電気学会研究会資料. EMT, 電磁界理論研究会",,,2009-11-27,2009,124,79-83,https://cir.nii.ac.jp/crid/1571698600993412608,