(3QehR hWbhS(B: (3OQGSGJ ai GdejKhdhLjG GdbOjeI (B/ s - (3LGf UObIs ([S.N] : (3QjGV GdQjS ddcJH hGdfTQ , s, 1989)
Keywords: (3GdahdcdhQs; (3GdTjGWjf hGdLGfs; (3GdSMQs; (3GdTjGWjfs; (3GdKYGHjfs; (3GdKYGHjf ai GdGOHs