著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) X. F. Ma and T. Maruyama and G. Ma and T. Takeda,Three‐dimensional ionospheric tomography using observation data of GPS ground receivers and ionosonde by neural network,Journal of Geophysical Research: Space Physics,0148-0227,American Geophysical Union (AGU),2005-05,110,A5,A5,https://cir.nii.ac.jp/crid/1362262945313861504,https://doi.org/10.1029/2004ja010797