SERDIUK O. SUBSTANTIATION OF DIRECTIONS OF MODERNIZATION OF THERMAL ENERGY FACILITIES: PROBLEMS OF PRELIMINARY ESTIMATION AND AUTOMATION OF CALCULATIONS. ЕУ [Internet]. 2024 Oct. 10 [cited 2025 Apr. 11];61(4(677):30–45. Available from: https://nasu-periodicals.org.ua/index.php/economyukr/article/view/2018-04-3