Ken-ichi Hirayama
- An Expression For Influences of Opposing Current On Wave Breaking of Shoaling Wave On Uniform Slope. In: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1988, n. 393 (May 1988). (1988):
- Prediction Of Discharge Change In A Cold Region River. In: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1997, n. 565 ( 1997). (1997):