@article{oai:repository.dl.itc.u-tokyo.ac.jp:00027779, author = {二宮, 敏行}, issue = {4}, journal = {東京大学理学部弘報}, month = {Mar}, note = {application/pdf}, pages = {22--23}, title = {Old soldiers neber die only fade away}, volume = {22}, year = {1991} }