Yuuji Hayakawa
- A Study On Maintenance Management System For Road Structures. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1992, n. 444 (mars 1992). (1992):
- A Study On Expert System For Selection Of Bridge. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1992, n. 453 (septembre 1992). (1992):