(3TNUjI GdCOH GdYQHj hNWhGJ aj fbO GdTYQ hGdeSQM hGdbUI (B/s - (3GdUjaj, ESeGYjd eUWais ((3GdEScfOQjI, eUQ (B:s (3OGQ GdeYQaI GdLGeYjI,s, 1990)
(3HHdjhLQGajI (B: (3U(B. 343-353.s
Keywords: (3GdCOH GdYQHjs -- (3JGQjN hfbOs; (3GdTYQ GdYQHjs -- (3JGQjN hfbOs; (3GdeSQMjI GdYQHjIs -- (3JGQjN hfbOs; (3GdbUI GdYQHjIs -- (3JGQjN hfbOs