(3GdfXQI GdeYeGQjI deSGdJi GdScf hGdGScGf (B/ s - (3YeGO eMeO YOfGfs ((3GdbGgQI (B: s (3OGQ OeTb ddfTQ hGdJhRjY hGdWHGYI , s, 1991)
Keywords: (3GdGScGfs; (3GdgfOSI GdeYeGQjIs; (3GdGfTGAGJ GdeYeGQjIs