H. Ban, T. Dederick, H. Nambo, and T. Oyabu, Stylistic Characteristics of English News, Proceedings of the 5th Japan-Korea Joint Symposium on Emotion and Sensibility, 2004.

H. Ban, T. Dederick, and T. Oyabu, Linguistical Characteristics of Eliyahu M. Goldratt's The Goal, Proceedings of the Fourth Asia-Pacific Conference on Industrial Engineering and Management Systems, pp.1221-1225, 2002.

H. Ban, T. Dederick, and T. Oyabu, Metrical Analysis of English Materials for Business Management, Proceedings of the 33rd International Conference on Computers and Industrial Engineering, p.450, 2004.

H. Ban, T. Dederick, H. Nambo, and T. Oyabu, Relative Difficulty of Various English Writings by Fuzzy Inference and Its Application to Selecting Teaching Materials, An International Journal of Industrial Engineering & Management Systems, vol.3, issue.1, pp.85-91, 2004.

G. U. Yule, The Statistical Study of Literary Vocabulary, 1944.

H. Ban, T. Dederick, T. Oyabu, U. S. , and U. K. , Metrical Comparison of English Textbooks in East Asian Countries, the, Proceedings of the 4th International Symposium on Advanced Intelligent Systems, pp.508-512, 2003.

H. Ban, T. Dederick, H. Nambo, and T. Oyabu, Metrical Comparison of English Materials for Business Management and Information Technology Proceedings of the Fifth Asia-Pacific Industrial Engineering and Management Systems Conference, 2004.