Two-Parameter Universes: Part 1 Consider a Rectangular Point... - Wallace Feurzeig; Gabriel Katz; Philip Lewis; Victor Steinbok (Int. J. Comput. Math. Learn., 2000)

Two-Parameter Universes. Part 2. Picture a Quadratic Polynomial... - Wallace Feurzeig; Gabriel Katz; Philip Lewis; Victor Steinbok (Int. J. Comput. Math. Learn., 2000)