@incollection{Ishikawa12, author = {Takeo Ishikawa}, title = {Analysis of Natural Frequency, Radial Force and Vibration of Induction Motors Fed by PWM Inverter}, booktitle = {Induction Motors}, publisher = {IntechOpen}, address = {Rijeka}, year = {2012}, editor = {Prof. Rui Esteves Ara├║jo}, chapter = {9}, doi = {10.5772/49950}, url = {https://doi.org/10.5772/49950} }