HANSEN VAGN L. <br/><br/>
SHADOWS OF THE CIRCLE . CONIC SECTION , OPTIMAL, FIGURES AND NON EUCLIDEAN GEOMETRY 

 - LONDON  WORLD SCIENTIFIC PUBLISHER  1998 
<br/><br/> INCLUDES INDEX 
<br/><br/><label>ISBN: </label>981023418-X 
<br/><br/><label>Source: </label>B-26022 
<br/><br/><label>LC Class. No.: </label>QA445.  / H36