“Key Performance Indicators as an Instrument of Achieving Strategic Indicators of Oil and Gas Producers”, Mediterr. J. Soc. Sci., vol. 6, no. 3 S3, p. 19, May 2015, Accessed: Sep. 27, 2024. [Online]. Available: https://www.richtmann.org/journal/index.php/mjss/article/view/6649