Ryoji Hayakawa
- Seismic Performance Of C-bent Columns Based On A Cyclic Loading Test. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 2003, n. 745 (octobre 2003). (2003):
- Effect Of Bilateral Loadings On The Flexural Strength And Ductility Of Reinforced Concrete Bridge Columns. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 2004, n. 759 (avril 2004). (2004):