1. The Investment Trusts Association Japan: Questionnaire survey about investment trusts 2012(in Japanese). http://www.toushin.or.jp/statistics/report/research2012/ last Access July 22 2014 The Investment Trusts Association Japan: Questionnaire survey about investment trusts 2012(in Japanese). http://www.toushin.or.jp/statistics/report/research2012/ last Access July 22 2014
2. Nagao M.: What is "Understanding"(in Japanese). Iwanami Shoten Publishers. (2001) Nagao M.: What is "Understanding"(in Japanese). Iwanami Shoten Publishers. (2001)
3. Kudo T. Matsumoto Y.: Japanese dependency analysis using cascaded chunking. In: CoNLL 2002: Proceedings of the 6th Conference on Natural Language Learning 2002 (COLING 2002 Post-Conference Workshops). pp. 63--69 (2002) 10.3115/1118853.1118869 Kudo T. Matsumoto Y.: Japanese dependency analysis using cascaded chunking. In: CoNLL 2002: Proceedings of the 6th Conference on Natural Language Learning 2002 (COLING 2002 Post-Conference Workshops). pp. 63--69 (2002) 10.3115/1118853.1118869
4. Granger C.W.: Investigating causal relations by econometric models and cross-spectral methods. Econometrica: Journal of the Econometric Society pp. 424--438 (1969) Granger C.W.: Investigating causal relations by econometric models and cross-spectral methods. Econometrica: Journal of the Econometric Society pp. 424--438 (1969)