References
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- 일본 전기학회 기술보고 제749호, ISSN 0919-9195, '超高速 ドライブ 技術', 1999
- Kaevinen J., 'Future Perspectives of Electrical Machines and Market Trends', Proc. of ICEM, 2000 Espoo, Finland, pp.1-4
- 日經産業新聞, '특집 21세기의 신기술, 신시장조사', 1999
- Do Hyun Kang, 'Future Perspectives of High-Speed Electrical Machines and Market Rrends', Spring Annual Conference 2001, KIEE EMECS, B-41, 2001