1. 1) British Standard Institution, Steel, Concrete and Composite Bridges, Code of Practice for Fatigue, British Standard 5400: Part 10, 1980.
2. 2) European Convention for Constructional Steelwork (ECCS), Technical Committee 6-Fatigue, Recommendations for the Fatigue Design of Steel Structures, 1985.
3. 3) American Association of State Highway and Transportation Officials (AASHTO), Standard Specifications for Highway Bridges, Fourteenth version, 1989.
4. 4) Japanese Society of Steel Construction (JSSC), Fatigue Design Recommendations for Steel Structures, Gihoudou, April, 1993 (in Japanese).
5. 5) Melhem, H. G. and Klippstein, K. H.: A study on variable amplitude load fatigue: Work-in Progress, Research Report No. ST6, University of Pittsburgh, Jan., 1990.