1. 1. Adeli, H., ed., Expert Systems in Construction and Structural Engineering, Chapman and Hall, New York, 1988.
2. 2. Aturaliya, S. P. , Bridge condition rating based on fuzzy set theory and eigen vector approach, masters thesis, Department of Civil Engineering, Kansas State University, Manhattan, Kansas, 1994.
3. 3. Bridge Inspector's Training Manual 70, U.S. Dept. of Transportation, Federal Highway Administration, Washington, D.C., 1979.
4. Use of fuzzy sets in developing code risk factors;Elms;Civil Engineering Systems,1984