Friedlander, F.G <br/><br/>
Wave equation on a curved space-time 
F.G. Friedlander 
 - Cambridge  Cambridge University Press  1975 
 - x  282 
 - Cambridge monographs on mathematical physics 2 .
<br/><br/><label>ISBN: </label>0521205670 
<br/><br/><label>Dewey Class. No.: </label>13.06  / FRIE