Grigorieva, N., Dobrovolska, L., Sobchuk, D., Shabaykovych, V. and Romaniuk, M. 2017. Performance efficiency analysis of electric power supply systems. Eastern-European Journal of Enterprise Technologies. 1, 8 (85) (Feb. 2017), 34–40. DOI:https://doi.org/10.15587/1729-4061.2017.92290.