(3GdCMcGe GdTQYjI GdUZQi GdUMjMI (B/s - (3GdETHjdj, eMeO YHO GdMb Hf YHO GdQMef Hf YHO Gddg,s 510-581 (3gLQjG(B.s; (3GdYfHQj, NGdO Hf Ydj Hf eMeOs; (3GdgdjS, Ce eMeO HfJ CMeOs ((3LOI (B:s (3ecJHI GdYde,s, 1992)
Keywords: (3GdMOjKs -- (3CMcGes; (3GdCMcGe GdTQYjIs