Ovsienko, Valentin. <br/><br/>
Projective differential geometry old and new:  from the Schwarzian derivative to the cohomology of diffeomorphism groups/ 
V. Ovsienko, S. Tabachnikov. 
 - Cambridge, UK;  New York:  Cambridge University Press,  2005. 
 - xi, 249 p.:  ill.;  24 cm. 
 - Cambridge tracts in mathematics;  165 .
<br/><br/>Includes bibliographical references (p. 236-246) and index. 
<br/><br/><label>ISBN: </label>0521831865 (hardback) 
<br/><br/><label>LCCN: </label>00404591 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Projective differential geometry.
<br/><br/><label>Dewey Class. No.: </label>516.36  / O96p