<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Weisen Shi</style></author><author><style face="normal" font="default" size="100%">Junling Li</style></author><author><style face="normal" font="default" size="100%">Huaqing Wu</style></author><author><style face="normal" font="default" size="100%">Conghao Zhou</style></author><author><style face="normal" font="default" size="100%">Nan Cheng</style></author><author><style face="normal" font="default" size="100%">Xuemin (Sherman) Shen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Drone-Cell Trajectory Planning and Resource Allocation for Highly Mobile Networks: A Hierarchical DRL Approach</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Internet of Things Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2021</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9179787</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">8</style></volume><pages><style face="normal" font="default" size="100%">9800-9813</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">12</style></issue></record></records></xml>