(3ePcQGJ bGOI GdYScQjI GdeUQjI (B67 -72s (3ai GYbGH GdfcSI (B/s - (3eMeO GdLhGOi(B.s ((3GdbGgQI (B,s, 2000)
(3jMJhi GdcJGH Ydi GdYOjO ef GdePcQGJ ddbGOI GdYScQjf aiGYbGH GdfcSI (B.s
Keywords: (3GdSjGSIs -- (3ChVGY (B-s -- (3ChVGYs -- (3eUQ(B.s