c - (3YUQ, ESeGYjd CMeOs ([(3O(B. (3e(B. :s (3O(B. (3f(B.](3,s, 2006)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdeMGSHI GdJMdjdjI(B.s; (3GdbhGFe GdeGdjI(B.s