Budiaji, Singgih, and Lilik Sugiharti. “Digital Transformation and Operational Efficiency: A Two-Stage DEA Approach in Electricity Distribution Units in Central Java and the Special Region of Yogyakarta”. Dinasti International Journal of Education Management and Social Science, vol. 7, no. 4, Apr. 2026, pp. 3642-56, doi:10.38035/dijemss.v7i4.6441.