Lakshminarayanan, V. <br/><br/>
Lagrangian optics / 
V. Lakshminarayanan, Ajoy Ghatak, K. Thyagarajan. 
 - [S.l.] :  Springer,  2002. 
 - 240 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0792375823 9780792375821 
<br/><br/><label>Dewey Class. No.: </label>535.32