On the periodic solutions of a generalized smooth or non-smooth perturbed planar double pendulum
arXiv:1203.0498 · doi:10.1007/s40863-015-0017-1
Abstract
We provide sufficient conditions for the existence of periodic solutions with small amplitude of the non--linear planar double pendulum perturbed by smooth or non--smooth functions.
arXiv admin note: substantial text overlap with arXiv:1109.6378