Keimel, Klaus <br/><br/>
Ordered cones and approximation 
Klaus Keimel 
 - Berlin  Springer- Verlag  1992 
 - vi,134p. 
 - Lecture notes in mathematics   1517 .
<br/><br/><label>ISBN: </label>3540554459 
<br/><br/><label>Dewey Class. No.: </label>511.4 L626A