Approximation algorithms for constrained for constrained node weighted steiner tree problems

Author(s):  
Anna Moss ◽  
Yuval Rabani
Author(s):  
Clemens Gröpl ◽  
Stefan Hougardy ◽  
Till Nierhoff ◽  
Hans Jürgen Prömel

2008 ◽  
pp. 3723-3736 ◽  
Author(s):  
Ding-Zhu Du ◽  
Bing Lu ◽  
Huang Ngo ◽  
Panos M. Pardalos

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