1) Public Work Research Institute - Ministry of Construction, The Kozai Club, and Japan Association of Steel Bridge Construction Institute, Report on Application of Weathering Steel to Highway Bridges (XV), (1992).
2) Japan Road Association, Specification for Highway Bridges I and II (Steel Bridge), p.518 (2012).
3) Japan Society of Steel Construction, JSSC Tec. Report, 73, 217 (2006).
4) Japan Society of Steel Construction, JSSC Tec. Report, 86, 159 (2009).