Nenkov, D. (2019) “Bulgarian SOFIX Levels in 2017 According to The “Price-to-Sales” and ‘Enterprise Value-to-Sales’ Ratios”, Finance, Accounting and Business Analysis (FABA), 1(1), pp. 33–52. Available at: https://www.faba.bg/index.php/faba/article/view/4 (Accessed: 8 November 2026).