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References

  • [1]
    K. Borsuk, Drei Sätze über die n-dimensionale Sphäre, Fund. Math. 20, 177190 (1933).
  • [2]
    A. Frommer and B. Lang, Existence tests for solutions of nonlinear equations using Borsuk's theorem, submitted for publication.
  • [3]
    C. Miranda, Un' osservazione su un teorema di Brouwer, Boll. Un. Mat. Ital. (2) 3, 57 (1940).
  • [4]
    W. Walster, The extended real interval system, http://www.mcsc.mu.edu/∼globsol/walster-papers.html (1998).