第四章主要讨论了行政侵权责任上的因果关系。
Chapter four mainly discusses the causation of administrative tort liability.
本文尝试系统地运用经济分析方法研究行政侵权责任制度。
This article is on the economic analysis of this topic systematically.
目前对行政侵权责任制度缺乏专门的研究，而且方法单一。
However, special research on that is very scarce, and the present method is also very single.
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