@article {chang2013damping,
	title = {On the damping-induced self-recovery phenomenon in mechanical systems with several unactuated cyclic variables},
	journal = {Journal of Nonlinear Science},
	volume = {23},
	number = {6},
	year = {2013},
	pages = {1023{\textendash}1038},
	publisher = {Springer US},
	author = {Chang, Dong Eui and Jeon, Soo}
}
