YI-YUAN CHENG; TAO HAI; YANG-BING ZHENG; BAO-LEI LI; LING XIA. Optimization and Design of Multi-ring Pole Pieces for Small-sized Permanent Magnetic Resonance Imaging Magnet. Applied Computational Electromagnetics Society Journal (ACES), [S. l.], v. 33, n. 09, p. 1026–1033, 2021. Disponível em: https://journals.riverpublishers.com/index.php/ACES/article/view/9011. Acesso em: 13 may. 2026.