Gerek, I. H., E. Erdis, G. Mistikoglu, and M. A. Usmen. “Evaluation of Plastering Crew Performance in Building Projects Using Data Envelopment Analysis”. Technological and Economic Development of Economy, vol. 22, no. 6, Nov. 2016, pp. 926-40, doi:10.3846/20294913.2014.909903.