@article{oai:tsukuba.repo.nii.ac.jp:00017124, author = {Miyasaka, Takashi and Shukuzawa, Osamu and Yokota, Ichiro}, issue = {3}, journal = {Tsukuba Journal of Mathematics}, month = {Dec}, pages = {687--703}, title = {Diagonalization of an element P of β^c by the compact Lie group E_7}, volume = {22}, year = {1998} }