(3OQhS aj bGfhf GdYbhHGJ (B: s (3GdbSe GdNGU (B: (3GdLQGFe GdeVQI HGdeUdMI GdYGeI, LQGFe GdCehGd, LQGFe GdeNOQGJ (B/ s - (3YHjO, MSfjf EHQGgje UGdM s ((3GdbGgQI (B: s (3OGQ GdfgVI GdYQHjI, s, 1986)
Keywords: (3bGfhf GdYbhHGJs -- (3eUQ s; (3GdbGfhf GdLfGFjs -- (3eUQ s; (3GdeNOQGJ s -- (3bhGfjf hJTQjYGJs -- (3eUQ s; (3LQGFe GdCehGds -- (3bhGfjf hJTQjYGJ s -- (3eUQ s