@inbook{inbook, title = {{Appendix: Translation of Sections from Duffing's Original Book}}, publisher = {{John Wiley & Sons, Ltd}}, url = {{}}, year = {{2011}}, month = {{3}}, author = {{Worden K and Worden H}}, doi = {{10.1002/9780470977859.app1}}, isbn = {{9780470715499}}, pages = {{323-354}}, note = {{Accessed on 2025/07/15}}}