Widagdo, Reza Sarwo, et al. “Design and Calculation of Single Tuned Passive Filter for Harmonic Mitigation in a 1250 KVA Distribution Transformer at PT. INKA (Persero) Madiun”. Jurnal Riset Rekayasa Elektro, vol. 7, no. 1, June 2025, pp. 53-62, doi:10.30595/jrre.v7i1.25333.