(3GdecJHGJ GdTGedI h JbfjGJ GdJYdje (B/ s - (3GdUhaj, YHO Gddg ESeGYjds ((3YeGf (B:s (3GdeDda,s, 1991)
Keywords: (3GdecJHGJ GdeOQSjIs; (3GdagQSIs; (3GdJUfja (B((3ecJHGJ (B)s