(3GdefXeGJ GdOhdjI GdSjGMjI hOhQgG aj JWhjQ GdbWGY GdSjGMj GdeUQj (B: s ((3HGdJWHjb Ydi ehbY OgThQ GdSjGMj(B) / s - (3MSf SYO SfO(B.s; (3ZGOI eMeO hajb(B. s; (3SgGe YHO GdfHj YHO GdYXje(B. s ([(3ecGf GdfTQ ZjQ eMOO(B] : s [(3GdfGTQ ZjQ eMOO(B](3, s, 2000)
(3jTJed Ydi GjVGMjGJ, NQGFW, LOGhd, hQSheGJ HjGfjI(B.s
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Keywords: (3GdbGfhf GdOhdj GdYGe(B. s