1. DEAN , K. , 1972 , A computer-aided quotation system for machine tools , Ph.D. Thesis , University of Nottingham , England .
2. USE OF DECISION DIAGRAMS TO EXAMINE TOOLING PROBLEMS
3. SASIENI , M. , YASPAN , A. , and FRIEDMAN , L. , 1959 ,Operations Research Methods and Problems( Wiley International ), p. 198 .