@article{oai:nagoya.repo.nii.ac.jp:00031232,
 author = {Yamamoto, Toshio and Ōta, Hiroshi},
 issue = {2},
 journal = {Memoirs of the Faculty of Engineering, Nagoya University},
 month = {Mar},
 pages = {197--217},
 title = {The damping effect on unstable whirlings of a shaft carrying an unsymmetrical rotor},
 volume = {19},
 year = {1968}
}