Ryota Okada
- Study Of Rubble Stone Scour Protection Works For Pier In Fast Current. In: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1993, n. 462 (März 1993). (1993):
- Study On Pouring, Confluence And Horizontal Joints Of Antiwashout Underwater Concrete For Large Scaleplacing. In: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1994, n. 492 (Juni 1994). (1994):
- 低発熱セメントの現状 (The State of the Art of Low-heat Cements). In: Concrete Journal (JCI), v. 30, n. 9 ( 1992). (1992):