(3GdHGfOG GdYedGbIs - (3UhaGf(B. (3CMeOs; (3LGQGddg(B. (3gGfFIs ((3GdeDSSI GdYQHjI s (3HjQhJs, 1990)
Keywords: (3GdMjhGfGJs; (3GdHGfOG s