%0 Journal Article
%A Keivan, Ebrahim, Iranzadeh, Soleyman
%T Application of Data Envelopment Analysis in Measuring the Relative Efficiency of Local Telephone Exchanges:A Case Study of Telecommunication Region of East Azerbaijan
%J The Journal of Productivity Management
%V 17
%N 3
%P 49-72
%D 2023
%R 10.30495/qjopm.2022.1901847.2879
%U https://sanad.iau.ir/fa/Article/975821