@article{oai:ismrepo.ism.ac.jp:00031649,
 author = {北川, 源四郎 and Kitagawa, Genshiro},
 issue = {2},
 journal = {統計数理, Proceedings of the Institute of Statistical Mathematics},
 month = {Dec},
 pages = {239--245},
 title = {非定常時系列モデルと最適化 (統計数理研究所 研究活動 (公開講演会要旨))},
 volume = {37},
 year = {1989}
}