Bjorner, Anders et al <br/><br/>
Oriented matroids 

 - 2nd ed 
 - Cambridge  Cambridge University Press  1999 
 - xii,548p.  23 cm. P.B. 
 - Encyclopedia of mathematics and its applications .
<br/><br/><label>ISBN: </label>052177750X 
<br/><br/><label>Dewey Class. No.: </label>511.6  / BJO