3Stephen Gorove. Environmental Risks Arising from Space Activities:Focus on the Liability Convention, in Environmental Aspects of Activities in Outer Space[J ]. Studies in Air and Space Law Vol. 9,1990.
4Technical Report on Space Debris, UN Document A/AC. 105/720, paragraph 6,1999.
5Carl Q. Christol, The Modern Internationao Law of Outer Space83 - 84, (Pergamon Pr 1982)
6Phillip C. Jessup & Howard J. Taubenfield, Control for Outer Space 249 - 250 Columbia University Press 1959.
7W. PAGE KEETON ET AL, PROSSER AND KEETON ON THE LAW OF TORTS, at 164- 165 West Group; 5th edition(1984).
