@article{liu2017smartadp,
	title={Smartadp: Visual Analytics of Large-scale Taxi Trajectories for Selecting Billboard Locations},
	author={Liu, Dongyu and Weng, Di and Li, Yuhong and Bao, Jie and Zheng, Yu and Qu, Huamin and Wu, Yingcai},
	journal={IEEE Transactions on Visualization and Computer Graphics},
	volume={23},
	number={1},
	pages={1--10},
	year={2017},
	publisher={IEEE}
}