TY - JOUR TI - Life Cycle Greenhouse Gas Emissions for Last-Mile Parcel Delivery by Automated Vehicles and Robots PY - 2021 AU - Luyao Li AU - Xiaoyi He AU - Gregory A. Keoleian AU - Hyung Chul Kim AU - Robert De Kleine AU - Timothy J. Wallington AU - Nicholas J. Kemp T2 - Environmental Science & Technology LK - https://doi.org/10.1021/acs.est.0c08213 ER -