(3Ydi OQH GdLeGd(B((3QMdI(B) / s - (3ejNGFjd eYhVs ([S.N] : (3OGQ LQhS ddfTQ hGdJhRjY , s, 1986)
Keywords: (3GdGOH GdYQHis; (3GdQMdGJ ai GdGOHs; (3GjWGdjGs; (3hUa hQMdGJs