“OPTIMIZATION OF SURPLUS ELECTRICITY MANAGEMENT FROM MUNICIPAL PHOTOVOLTAIC SYSTEMS: VIRTUAL STORAGE VS BATTERY SYSTEMS: UDC: 621.311.243:[621.316.11.015:621.354](497.7)”, etima, vol. 3, no. 1, pp. 43–52, Oct. 2025, doi: 10.46763/ETIMA253143a.