Weyl, Hermann 1885-1955.
Symmetry /
by Hermann Weyl 
. - Princeton : Princeton university press,  1982 
. - 168 p.  ill.  21 cm. 
<br/>К.: Бібліогр. : c. 157-159, Index 
<br/><label>  ISBN: </label>0-691-08045-3 0-691-02374-3