(3JQeje hUjGfI GdeHGfj GdGKQjI hGdJGQjNjI s - (3TGgjf , YHO GdeYRs ((3eUQ(B:s (3GdeLdS GdGYdi ddGKGQ GdeUQjI,s, 1990)
Keywords: (3GdGKGQ(B- (3JQeje s