Promel, Hans Jurgen and Steger, Angelika <br/><br/>
The Steiner tree problem; a tour through graphs, algorithms, and complexity   

 - Wiesbaden  Vieweg  2002 
 - viii, 241p. Bibl. Index. 
 - Advanced lectures in Mathematics .
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<br/><br/><label>ISBN: </label>3528067624 
<br/><br/><label>Dewey Class. No.: </label>511.5  / P965.ST