Research on model for collision risk in process of airspace planning
QU Yuling, HUO Zhiqin, LI Chong, ZHU Xinping, CHEN Yanli, QU Yanwei
China Safety Science Journal . 2017, (11): 67 -72 .  DOI: 10.16265/j.cnki.issn1003-3033.2017.11.012