Lashgari, A., M. M. Fouladgar, A. Yazdani-Chamzini, and M. J. Skibniewski. “Using an Integrated Model for Shaft Sinking Method Selection”. Journal of Civil Engineering and Management, vol. 17, no. 4, Dec. 2011, pp. 569-80, doi:10.3846/13923730.2011.628687.