@article{article, title  = {{On Optimizing a Multi-Mode Last-Mile Parcel Delivery System with Vans, Truck and Drone}},

 publisher = {{MDPI AG}},

 url = {{http://dx.doi.org/10.3390/electronics10202510 }},

 year = {{2021}},

 month = {{10}},

 author = {{Wang C and Lan H and Saldanha-da-Gama F and Chen Y}},

 doi = {{10.3390/electronics10202510}},

 volume = {{10}},

 journal = {{Electronics}},

 issue = {{20}},

 pages = {{2510-2510}},

 note = {{Accessed on 2024/10/23}}}