suhongyu000 发表于 2013-1-28 15:23 
this one?
Yes, 3q very much!
能不能再帮我找下面的一篇?
Heuristic procedures for the m-partial cover problem on a plane
European Journal of Operational Research
Volume 11, Issue 2, October 1982, Pages 149–157
http://www.sciencedirect.com/science/article/pii/0377221782901096