Keimel, Klaus., <br/><br/>
Ordered cones and approximation 
/ Klaus Keimel, Walter Roth. 
 - Berlin  Springer-Verlag  1992. 
 - vi, 134 pages. ;  25 cm. 
 - Lecture notes in mathematics  1517 .
<br/><br/>Includes bibliographical references (p. 129-132) and index. 
<br/><br/><label>ISBN: </label>3540554459 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cones (Operator theory)<br/>Approximation theory