(3GdYbhO GdeSeGI aj GdHjY hGdEjLGQ (B/ s - (3GdYHjOj, Ydj gGOjs ((3YeGf (B:s (3GdeQcR Gdbhej ddfTQ,s, 1999)
Keywords: (3GdYbhOs; (3GdbGfhf GdeOfjs; (3GdeGdchfs; (3GdHjhYs; (3GdEjLGQs; (3fbd GdedcjIs; (3GdCQOfs