Alvarez- Gaume, L. <br/><br/>
Global geometry and mathematical physics 
L. Alvarez- Gaume 
 - New York  Springer- verlag  1990 
 - ix, 197 p 
<br/><br/><label>Subjects--Index Terms: </label>Geometry  Mathematical physics 
<br/><br/><label>Universal Decimal Class. No.: </label>514  / ALV