K. . Sharma, „Empirical Study of Factors Affecting The Value of Telecom Services: Exploring Telecom Services Value Model“, OE, let. 60, št. 3-4, str. 26–33, avg. 2014, Pridobljeno: 13. januar 2026. [Na spletu]. Dostopno na: https://old.journals.um.si/index.php/oe/article/view/2281