Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
T. J. Healey and J. A. Treacy,Exact block diagonalization of large eigenvalue problems for structures with symmetry,International Journal for Numerical Methods in Engineering,0029-5981,Wiley,1991-02,31,2,265-285,https://cir.nii.ac.jp/crid/1363670318348381056,https://doi.org/10.1002/nme.1620310205