Sargsyan, T.A. 2023. REGIONAL CHARACTERISTICS, PRINCIPLES AND PERSPECTIVES OF EUROPE’S EXTERNAL ENERGY SUPPLY. Proceedings of the YSU C: Geological and Geographical Sciences. 57, 1-2 (260) (Jul. 2023), 53–60. DOI:https://doi.org/10.46991/PYSU:C/2023.57.1-2.053.