@article{ITO_2007,title={{Control of a Three-joint Underactuated Manipulator by IDA-PBC Method}},volume={43},ISSN={0453-4654},DOI={10.9746/ve.sicetr1965.43.788},number={9},journal={Transactions of the Society of Instrument and Control Engineers},publisher={The Society of Instrument and Control Engineers},author={ITO, Masahide and TODA, Naohiro},year={2007},pages={788--797}}