@article{201902.0183,
	doi = {10.20944/preprints201902.0183.v1},
	url = {https://doi.org/10.20944/preprints201902.0183.v1},
	year = 2019,
	month = {February},
	publisher = {Preprints},
	author = {Yao Liu and Jianmai Shi and Guohua Wu and Zhong Liu and Witold Pedrycz},
	title = {Two-Echelon Routing Problem for Parcel Delivery by Cooperated Truck and Drone},
	journal = {Preprints}
}