Sotoyuki Hayakashi
- Cost Analysys Of The Characteristics Of A Highly Upgraded Water Supply System Considering Drought. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1994, n. 491 ( 1994). (1994):
- An Optimal Design of A Highly Upgraded Water Supply System On Phisical Phenomena Model of Multi Water Quality Items. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1996, n. 533 (février 1996). (1996):