Xu, X., An, J., Du, B., & Feng, H. Electromagnetic design and optimization of ropeless overspeed protection device for direct drive elevators. AIP Publishing LLC.
Chicago Style (17th ed.) CitationXu, Xiaozhuo, Jinsheng An, Baoyu Du, and Haichao Feng. Electromagnetic Design and Optimization of Ropeless Overspeed Protection Device for Direct Drive Elevators. AIP Publishing LLC.
MLA (9th ed.) CitationXu, Xiaozhuo, et al. Electromagnetic Design and Optimization of Ropeless Overspeed Protection Device for Direct Drive Elevators. AIP Publishing LLC.
Warning: These citations may not always be 100% accurate.