TY - JOUR AU - Azizian, D. AU - Gharehpetian, G. TI - Winding Losses Calculation in Multi-Winding Traction Transformer Using a Semi-Numerical Method JO - Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran VL - 16 IS - 4 SP - 257 EP - 264 PY - 2019 DO - ER -