Petrov, A.Z. <br/><br/>
Einstein spaces 

 - Oxford  Pergamon Press  1969 
 - xiii, 411 p. 
<br/><br/><label>ISBN: </label>246081 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relativiry
<br/><br/><label>Dewey Class. No.: </label>530.11  / PET