Polar Motion Effect on Gravity Observed with a Superconducting Gravimeter at Syowa Station, Antarctica - Sato, Tadahiro; Nawa, Kazunari; Shibuya, Kazuo; Tamura, Yoshiaki; Ooe, Masatsugu; Kaminuma, Katsutada; Aoyama, Yuichi (Springer Berlin Heidelberg, 1997)