(3JfXje GdCSQI hJfXje GdfSd (B/s - (3eMeO CHhRgQIs ((3GdbGgQI (B:s (3OGQ GdacQ GdYQHj,s, 1988)
(3GdfU HGddZI GdYQHjIs
Keywords: (3JfXje GdfSds