(3adSaI GdJCOjH (B/s - (3LGSe, RHjOIs ((3GdTGQbI, GdEeGQGJ GdYQHjI GdeJMOI (B:s (3TQWI GdTGQbI, eQcR HMhK GdTQWI,s, 1999)
(3HHdjhLQGajI (B: (3U(B. 62-67.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdehXahfs -- (3JCOjHs -- (3bhGfjf hJTQjYGJs -- (3GdEeGQGJ GdYQHjI GdeJMOIs