(3GdJaSjQ GdHjGfj ddbQBf GdcQje (B/ s - (3HfJ GdTGWiA, YGFTI YHO GdQMefs ((3GdbGgQI (B:s (3OGQ GdeYGQa,s, 1990)
Keywords: (3GdbQBf GdcQjes; (3CdaGX GdbQBfs; (3eYGfj GdbQBfs; (3CMcGe GdbQBfs