TY - JOUR T1 - Numerical computation of 3D magnetostatic field problems - an equivalent magnetised region method and its applications in modelling of permanent magnet machines JO - Transactions of Chinese Electrotechnical Society PY - 1987/01/01 AU - Wang J AU - Tang BQ ED - VL - 5 IS - 3 SP - 67 EP - 78 Y2 - 2024/10/23 ER -