@article{oai:tsukuba.repo.nii.ac.jp:00017371, author = {有光, 敏彦 and ARIMITSU, Toshihico and Umezawa, H. and Yamanaka, Y.}, issue = {11}, journal = {Journal of mathematical physics}, month = {Nov}, pages = {2741--2752}, title = {Canonical formalism of dissipative fields in thermo field dynamics}, volume = {28}, year = {1987}, yomi = {アリミツ, トシヒコ} }