(3GdMeGjI GdLfGFjI dMb GdWad aj GdMjGI Hjf GdbGfhf GdhVYj hGdTQjYI GdESdGejI (B:s (3OQGSI ebGQfI (B/s - (3YHO GdYGd, gdGdj YHO GddGg CMeOs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1989)
(3HHdjhLQGajI (B: (3U(B. 360-372.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdCWaGds -- (3hVY bGfhfj, bhGfjf, EdN(B.s -- (3eUQs; (3GdbGfhf GdLfGFj GdebGQfs; (3GdCWaGd aj GdESdGes; (3Mbhb GdCWaGd (B((3abg ESdGej(B)s