@article{Zhao2020NSGPL1,
	title={Hierarchical Non-Stationary Temporal {G}aussian Processes With {$L^1$}-Regularization},
	author={Zhao, Zheng and Gao, Rui and S{\"a}rkk{\"a}, Simo},
	journal={arXiv preprint arXiv:2105.09695},
	year={2021}
}