Spherical CR geometry and Dehn surgery  
Schwartz, Richard Evan. 
 - Princeton :  Princeton University Press,  2007 
 - xii, 186 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9780691128092 (acid-free paper) | 069112809X (acid-free paper) | 9780691128108 (pbk. : acid-free paper) | 0691128103 (pbk. : acid-free paper)