(3bQGQGJ QFjS GdeLdS GdCYdi ddTHGH hGdQjGVI (B:s (3Qbe (B108 (3dSfI (B1980 (3HGYJeGO GdfXGe GdCSGSj dGJMGOGJ GdCdYGH GdQjGVjI hdGFMJI GdeGdjI hQbe (B365 (3dSfI (B1989 (3HGUOGQ GdfXGe GdCSGSj dLeYjI HjhJ GdTHGH GdeUQjI (B((3GdLRA GdNGeS(B) /s - (3eUQ(B.s ((3GdbGgQI (B:s (3GdgjFI GdYGeI dTFhf GdeWGHY GdCejQjI,s, 1992)
Keywords: (3JTQjYGJ hbhGfjfs; (3GdTHGH hGdQjGVI(B.s