Esmaeili, A., R. A. Kahnali, R. Rostamzadeh, E. K. Zavadskas, and B. Ghoddami. “An Application of Fuzzy Logic to Assess Service Quality Attributes in Logistics Industry”. Transport, vol. 30, no. 2, June 2015, pp. 172–181, doi:10.3846/16484142.2015.1046402.