Vytvytska, uliana (2021) “DETERMINATION OF DISCOUNT RATES IN EVALUATION OF EFFICIENCY OF INVESTMENT PROJECTS IN OIL AND GAS PRODUCTION”, Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), (2(24), pp. 37–47. doi: 10.31471/2409-0948-2021-2(24)-37-47.