Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TSUBOKAWA Ietsune and SUGAWA Chikara and HOSOYAMA Kennosuke and NAKAI Sinzi and SATO Tadahiro and ISHII Hiroshi and MISHINA Masaaki and HAGIWARA Yukio and TAJIMA Hirokazu and IZUTUYA Sadakatu and YANAGISAWA Michio and SETO Takao and NAKAGAWA Ichiro,Simultaneous Observations of Earth Tides Performed by LaCoste and Romberg Gravimeters at Mizusawa,Journal of the Geodetic Society of Japan,00380830,The Geodetic Society of Japan,1977,23,3,165-173,https://cir.nii.ac.jp/crid/1390282679042932736,https://doi.org/10.11366/sokuchi1954.23.165