各位大虾，谁有以下两篇Hull-White的文章，急求

Hull, John and Alan White, "Numerical procedures for implementing term structure models I: Single-Factor Models", Journal of Derivatives, Vol. 2, No. 1, (Fall 1994), pp. 7-16.

Hull, John and Alan White, "Numerical procedures for implementing term structure models II: Two-Factor Models", Journal of Derivatives, Vol. 2, No. 2, (Winter 1994), pp. 37-48.

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