Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) GUIJUN Yang and IWASAKI Ryoji and TAKADA Tsuyoshi,PARTIONING OF MASS AND FREQUENCY RATIO SPACE BASED ON INVARIANT POINT THEORY OF CONNECTED BUILDINGS AND DERIVATION OF OPTIMUM PARAMETERS,Journal of Structural and Construction Engineering (Transactions of AIJ),13404202,Architectural Institute of Japan,2007,72,617,71-76,https://cir.nii.ac.jp/crid/1390282680647640320,https://doi.org/10.3130/aijs.72.71_2