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[文献書誌] Hori,S.,Y,Fukao,M.Kumazawa,M.Furumoto,and A.Yamamoto: "A new method of spectral analysis and its application to the Eaeth's free oscillations" The Sompi method,JGR. 94. 7535-7553 (1989)
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[文献書誌] Hori,S.,Y,Fukao,M.Kumazawa and Y.Imanishi: "Discussion on the recent spectral analysis theories" J.Geophys.Res.(1989)
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[文献書誌] Y,Fukao,M.Kumazawa,and Y.Imanishi,Y,Fukao,M.Furumoto and A.Yamamoto: "A theory of spectral analysis based on the charateristic property of a linear dynamical system" Geophysical.J.Intern. (1989)