1. Akaike, H. (1973). Information theory and an extension of the maximum likelihood principle, B.N. Petrov and F. Csaki (eds.), 2nd International Symposium on Information theory, 716–723. Budapest: Akademiai Kiado.
2. Hayashi, C. and Murayama, T. (1964). Shijyochosa no Keikaku to Jissai (Planning and Practice for Marketing Survey). Nikkan Kogyo Shinbunsha.
3. Sakamoto, Y., Ishiguro, M. and Kitagawa, G. (1983). Jyohoryo Tokeigaku (Statistics for Information Quantity), Kyoritsu Shuppan.
4. Tanaka, T. (1983). Saisho Jijyoho ni-okeru Givens ho to Householder ho ni tsuite (Givens and Householder Methods in Least Squares), The Institute of Statistical Mathematics.