@inproceedings{watson2009piezoelectric, title = {Piezoelectric ultrasonic resonant micromotor with a volume of less than 1 mm 3 for use in medical microbots}, author = {Watson, Brett and Friend, James and Yeo, Leslie and Sitti, Metin}, booktitle = {Robotics and Automation, 2009. ICRA'09. IEEE International Conference on}, pages = {2225--2230}, organization = {IEEE}, year = {2009}, doi = {} }