@article{oai:omu.repo.nii.ac.jp:00008632,
 author = {Shirao, Yoshiaki and Kido, Masao},
 issue = {1},
 journal = {Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences},
 month = {Oct},
 note = {application/pdf, Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences. 1981, 30(1), p.13-19},
 pages = {13--19},
 title = {A Study of 1/3-harmonics in the neighborhood of Branching Point in Nonautonomous Piecewise Linear Systems with Unsymmetrical Restoring Force},
 volume = {30},
 year = {1981}
}