Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Arakida Hideyoshi and Fukushima Toshio,Secular Variation of Earth-Inner Planet Distance : New Problem from Precise Positional Observation in Solar System,Butsuri,00290181,The Physical Society of Japan,2008-07-05,63,7,517-523,https://cir.nii.ac.jp/crid/1390287849572999808,https://doi.org/10.11316/butsuri.63.7_517