@article{delshams2018arnold,
	title={Arnold diffusion for a complete family of perturbations with two independent harmonics},
	author={Delshams Vald{\'e}s, Amadeu and Schaefer, Rodrigo and others},
	journal={Discrete \& Continuous Dynamical Systems},
	volume={38},
	number={12},
	year={2018}
}