The Geometry of Flex Tangents to a Cubic Curve and its Parameterizations
  We show how the study of the geometry of the nine flex tangents to a cubic produces pseudo-parameterizations, including the ones given by Icart, Kammerer, Lercier, Renault and Farashahi, and infinitely many new ones. 
Jean-Marc Couveignes and Jean-Gabriel Kammerer
math.AG