@article{article, title  = {{A high torque density permanent magnet motor for oil pumping unit}},

 url = {{}},

 year = {{2008}},

 month = {{1}},

 author = {{Lu QF and Fan CZ and Ye YY and Zhu ZQ}},

 doi = {{10.1063/1.2831330}},

 volume = {{103}},

 journal = {{Journal of Applied Physics}},

 issue = {{7}},

 note = {{Accessed on 2025/01/03}}}