1. American Association of Cost Engineers (AACE) (1999) Skills and knowledge of cost engineering. 4th ed. Morgantown, WV: AACE.
2. Construction Association of Korea (CAK) (2015) Main construction statistics, Seoul: CAK.
3. Goldberg, D.E. (1989) Genetic algorithms in search, optimization and machine learning. Boston, MA: Addison-Wesley Publishing Co.
4. Kirkham, R. J. (2007) Ferry and Brandon′s cost planning of buildings, 8th ed. Hoboken, NJ: Wiley-Blackwell.
5. PMI(2013) A Guide to the project management body of knowledge (PMBOK Guide®) 5th ed., PA: Project Management Institute.