@article{delshams2016arnold,
	title={Arnold's mechanism of diffusion in the spatial circular restricted three-body problem: A semi-analytical argument},
	author={Delshams, Amadeu and Gidea, Marian and Rold{\'a}n, Pablo and others},
	year={2016},
	journal={Journal of Physics D},
	volume={334},
	pages={29 -- 48}
}