• Duffing System

    • Mathematica

      • Wolfram -- the makers of Mathematica
      • Library of Mathematica files

    • TeX

      • A not so short guide to LaTeX (pdf)
      • Inserting Graphics into LaTeX files(pdf)
      • The TeX users group
      • Upenn's online manual
      • Tex/LateX documentation
      • Kareen's Links
        • Columbia's math department LaTeX link
        • winedit
        • misc. resources
        • unix help
        • mictex
        • ghostview