@misc{indiciaea05458a396bf,
  title = {High resolution miniaturized stepper ultrasonic motor using differential composite motion.},
  author = {Xiangcheng Chu and Zengping Xing and Longtu Li and Zhilun Gui},
  year = {2004},
  doi = {10.1016/j.ultras.2003.10.001},
  url = {https://pubmed.ncbi.nlm.nih.gov/14996534/},
  note = {Source identifier: 14996534}
}