@article {MATHEDUC.02369878,
    author       = {Anon.},
    title        = {Algebra in the plane using the (projective) ruler. Pt. 2. (Algebra in der Ebene mit dem (projektiven) Lineal. T. 2.)},
    year         = {2006},
    journal      = {Die Wurzel},
    volume       = {40},
    number       = {1},
    issn         = {0232-4539},
    pages        = {18-22},
    publisher    = {Verein zur F\"orderung der Mathematik an Schulen und Universit\"äten e.V., FSU Jena, Fakult\"at f\"ur Mathematik und Informatik, Jena},
    msc2010      = {H70xx (G90xx M50xx)},
    identifier   = {2006f.03788},
}