@article{oai:nagoya.repo.nii.ac.jp:00031255,
 author = {Yamamoto, Toshio and Hayashi, Satoru},
 issue = {2},
 journal = {Memoirs of the Faculty of Engineering, Nagoya University},
 month = {Mar},
 pages = {85--150},
 title = {Summed and differential harmonic oscillations in nonlinear vibratory systems},
 volume = {18},
 year = {1967}
}