(3GdeMGaXI Ydi GdJacjQ GdeJhbO (B: s 83 (3JeQjfkG PgfjkG dEfYGT GdPGcQI hJMajR GdJPcjQ (B/ s - (3cGJR, dhQGfSs; (3OGQ GdYQHjI ddYdhe(B, s (3eQcR GdJYQjH hGdHQeLIs ((3HjQhJ (B: s (3GdOGQ GdYQHjI ddYdhe, s, 2000)
Keywords: (3GdCYUGH(B.s; (3GdPcGA(B.s; (3GdJeGQjf GdYbdjI(B.s; (3GdYedjGJ GdYbdjI(B.s; (3GdOeGZ(B.s