Topics on quantum gravity and beyond  essays in honor of Louis Witten on his retirement, University of Cincinnati, USA 3-4 April 1992 
editors Freydoon Mansouri & Joseph J. Scanio 
 - Singapore  World Scientific  1993 
 - 381 p. ; 22 cm. 
<br/><br/><label>ISBN: </label>9810212909 
<br/><br/><label>Subjects--Personal Names: </label><br/>Witten, Louis
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quantum gravity--Addresses, essays, lectures