CORRELATIONS BETWEEN FINANCIAL PERFORMANCE INDICATORS OF COMPANIES WITH CORE ACTIVITY IN THE ENERGY SECTOR AND RELATED INDUSTRIES, TRADED ON BUCHAREST STOCK EXCHANGE, AND THE BET-NG INDEX Journal title: Вісник Київського національного університету імені Тараса Шевченка. Економіка. Authors: Diana Elena Vasiu, Livia Ilie Subject(s):