@article{oai:ismrepo.ism.ac.jp:00031907, author = {原, 啓明 and 小山, 順二 and Hara, Hiroaki and Koyama, Junji}, issue = {2}, journal = {統計数理, Proceedings of the Institute of Statistical Mathematics}, month = {Dec}, pages = {217--226}, title = {複雑な系の活性化と相関関数}, volume = {40}, year = {1992} }