OLVER(Peter J) <br/><br/>
"Equivalence, invariants and symmetry" 

 - Cambridge  Cambridge University Press Uiversity press  1995 
 - Hbk.xvi p. + 525 
<br/><br/><label>ISBN: </label>0-521-47811-1 
<br/><br/><label>Source: </label>RB-630