Macias A Et Al <br/><br/>
Recent Developments in Gravitation and Mathematical Physics - Proceedings of the First Mexican School on Gravitation and Mathematical Physics 

 -  World Scientific  WSPC  1996 
<br/><br/><label>ISBN: </label>9789814530934 
<br/><br/><label>Source: </label>EBOOK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics