(3ehShYI GdSdWGf bGHhS dGSeGA GdYQH (B: (3Odjd GYdGe YeGf (B/ s - (3eMeO Hf GdRHjQ s; (3GdSYjO eMeO HOhis; (3Ydi GdOjf gdGds ((3HjQhJ (B:s (3ecJHI dHfGf,s, 1991)
Keywords: (3GddZI GdYQHjIs; (3GdGYdGes; (3SdWfI YeGfs; (3GSeGA GdGTNGUs; (3GdGSeGA GdYQHjIs; (3GdGOdIs