(3GdYLH (B:s (3GdCSHGH(B-(3GdeXGgQ(B-(3GdYdGL (B/s - (3GdMGaX, YeQ Hf ehSis 1389 (3gLQj(B-s ((3GdQjGV(B:s (3GdecJH GdJYGhfj ddOYhI hGdEQTGO,s, 1997)
Keywords: (3GdCNdGb GdSjFIs -- (3GdCNdGb GdePeheIs; (3GdZQhQs; (3GdCNdGb GdESdGejIs