Yuji Nagahiro
- A Comparative Study of the Industrial Railways in the Northern Part of Kyushu. Dans: Historical Studies in Civil Engineering, v. 19 ( 1999). (1999):
- A Historical Study on the Development of the Wakamatu Port and Dokai Bay in the Period of Foundation. Dans: Historical Studies in Civil Engineering, v. 18 ( 1998). (1998):
- A Historical Study of the Tikuho Industrial Railways in the Northern Part of Kyushu. Dans: Historical Studies in Civil Engineering, v. 17 ( 1997). (1997):
- A Study of Water Transport on the River Onga. Dans: Historical Studies in Civil Engineering, v. 13 ( 1993). (1993):
- A Historical Study of Civil Engineering for Development in Tikuho Coal Field. Dans: Historical Studies in Civil Engineering, v. 12 ( 1992). (1992):
- On the Onga-Horikawa, about the Functional Parts and Restoration. Dans: Historical Studies in Civil Engineering, v. 11 ( 1991). (1991):