@article{Liu2019, author = "Jianwei Liu and Dejian Li and Peng Yu", title = "{Simplified vehicle calculation model.}", year = "2019", month = "4", url = "https://plos.figshare.com/articles/figure/Simplified_vehicle_calculation_model_/8028260", doi = "10.1371/journal.pone.0215773.g002" }