KIEN, Pham Xuan.
 Researching the relationship between operational efficiency with profitability of telecommunication technology joint-stock companies..
<strong>VNU JOURNAL OF ECONOMICS AND BUSINESS</strong>, [S.l.], v. 33, n. 2, june 2017.
ISSN 2734-9845.
Available at: &lt;<a href="https://js.vnu.edu.vn/EAB/article/view/4069" target="_new">https://js.vnu.edu.vn/EAB/article/view/4069</a>&gt;. Date accessed: 25 apr. 2024.