Open AccessPORTFOLIO MANAGEMENT OF INCREASE IN ENERGY EFFICIENCY OF THE COAL-MINING ENTERPRISE
Author(s) -
Олена Степанівна Бєзгіна
Publication year - 2018
Publication title -
problemi sistemnogo pìdhodu v ekonomìcì
Language(s) - English
Resource type - Journals
ISSN - 2520-2200
DOI - 10.32782/2520-2200/2018-6-12
Subject(s) - portfolio , coal , business , coal mining , environmental economics , engineering , finance , economics , waste management