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      The Newton Procedure for several variables 

      Soto Prieto, Manuel Jesús; Vicente Córdoba, José Luis (Elsevier, 2011-07-15)
      Let us consider an equation of the form P(x, z) = zm + w1(x)zm−1 + · · · + wm−1(x)z + wm(x) = 0, where m>1, n>1, x=(x1⋯xn) ...