Buchdahl, H. A. <br/><br/>
An introduction to Hamiltonian optics, 
by H. A. Buchdahl. 
 - Cambridge,  Cambridge University Press,  1970. 
 - xv, 360 p.  23 cm. 
 - Cambridge monographs on physics .
<br/><br/><label>ISBN: </label>0521075165 
<br/><br/><label>Subjects--Index Terms: </label>Geometrical optics  Symmetry (Physics)  Aberration 
<br/><br/><label>Dewey Class. No.: </label>535/.32  / BUC