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[文献書誌] 真鍋 盛二,佐藤 忠弘,酒井 俐,横山 紘一: "Atmospheric Loading Effect on VLBI Observations" Proc.AGU Chapman Conference on Geodetic VLBI:Monitoring Global Change. 111-122 (1991)
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[文献書誌] 横山 紘一: "国際測地学および地球物理学連合第20回総会報告地球回転" 測地学会誌. 37. 289-293 (1991)
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[文献書誌] 横山 紘一: "Actvity Report of the International Earth Rotation Service for the Year 1991" 1991年度経緯度研究会集録. 87-98 (1992)
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[文献書誌] 横山 紘一: "International Earth Rotation Service" Geodesists′Handbook(国際測地学協会発行). (1992)
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[文献書誌] 横山 紘一,真鍋 盛二,酒井 俐: "Earth Rotation and Reference Frame Results of the NAOM VLBI Analysis Center" Annal Report of the International Earth Rotation Service for Year 1991. (1992)
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[文献書誌] Tamura,Y.,S.Nakai and K.Sato: "GPS Measurements on the Mizusawa-Esashi Baseline" Proceedings of the Japanese Symposium on GPS (1991). 107-111 (1991)
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[文献書誌] Kawaguchi,N.他: "A High Performance Transportable VLBI Correlator" Proceedings of the AGU Chapman Conference on Geodetic VLBI:Monitoring Global Change. 82-89 (1991)
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[文献書誌] Fujishita,M.他: "6m Paraboloidal Antenna for Geodetic and Astrometric VLBI Observations" Submitted to Bulletin Geodesique.(1992)
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[文献書誌] 田村 良明,他: "簡易型相関器のソフトウェア開発状況について" VLBIネットワ-ク・シンポジウム集録. (1992)