Yoshiaki Ito
- A Historical Study on Irrigration on Mt.ONIGOE, AKITA-HAN in EDO ERA. In: Historical Studies in Civil Engineering, v. 11 ( 1991). (1991):
- A Historical Study on Irrigation "KISAKATA ONSUIRO" on Mt. CHO K A I. In: Historical Studies in Civil Engineering, v. 10 ( 1990). (1990):