(3GdjSGQ GdeUQi hJMhdGJ GdOhd GdGTJQGcjI (B:(3GHMGK hefGbTGJ GdfOhI GdJi YbOJ HGdbGgQI (B/ s - (3GMeO fHjd GdgdGdis ((3GdbGgQI (B: s (3eQcR GdHMhK GdYQHjI , s, 1991)
Keywords: (3GdeGQcSjIs; (3GdGTJQGcjIs; (3GdfXe GdSjGSjIs; (3GdQGSeGdjIs; (3GdGTJQGcjI GdYdejIs