@article{{JEB}{}, author = {Kien, P.}, title = { Researching the relationship between operational efficiency with profitability of telecommunication technology joint-stock companies.}, journal = {VNU JOURNAL OF ECONOMICS AND BUSINESS}, volume = {33}, number = {2}, year = {2017}, url = {https://js.vnu.edu.vn/EAB/article/view/4069} }