(3JcfhdhLjG GdGJUGd hGdKbGaI Hjf GdfXQjI hGdJWHjb (B/ s - (3YHOGdaJGM GHQGgje YHOGdfHis ((3GdbGgQI (B: s (3GdYQHi ddfTQ hGdJhRjY , s, 1990)
Keywords: (3GdKbGaIs; (3GdGJUGds; (3GdGYdGes; (3hSGFd GdGYdGes