An Analysis of User Preference toward Handwriting Instruments

Kao H. H. Smith K. U. , & Knutson R. An experimental cybernetic analysis of handwriting and penpoint design. Ergonomics, 1969, 12, 453–458.

Kao H. S. R. Human factors in penpoint design. Proceedings of the 17th Annual Convention of the Human Factors Society, Washington, D. C., October 16–18, 1973.

Kao H. S. R. Human factors design of writing instruments for children: The effects of pen size variations. Proceedings of the 18th Annual Convention of the Human Factors Society, Huntsville, Alabama, October 15–17, 1974.