(3KhQI (B23 (3jhdjh (B:s (3L (B1 (3eUQ hGdYScQjhf (B. (3eLJeY LeGd YHOGdfGUQ (B. (3YHOGdfGUQ hGdYQH (B/ s - (3GMeO MeQhTs ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1992)
Keywords: (3eUQs -- (3GdYUQ GdMOjKs; (3KhQI (B23 (3jhdjh (B1952s; (3GdGYJOGA GdKdGKi Ydi eUQ (B1956s; (3GdGNhGf GdeSdehfs