外空活动长期可持续性面临的挑战及对策
尹玉海, 颜永亮
Challenges Related to Long-term Sustainability of Outer Space Activities and Their Solutions
YIN Yuhai, YAN Yongliang
北京航空航天大学学报社科版 . 2016, (2): 20 -25 .  DOI: 10.13766/j.bhsk.1008-2204.2015.0485