Does anyone know whether the graphical solution of cubic equations with real roots by means of intersecting a circle and a parabola or hyperbola (or just a parabola and hyperbola) is known or not? That solution has to give the equations for the circles, parabolas and hyperbolas involved and not only for a special case. I have been surfing around for weeks now and got 1 hit: a 2-page document in the JSTOR library, but that is almost for sure not the one that I am looking for as it is more likely to be a 20 page document. A "yes" answer will do, a "no" answer will do, the "I don't know" answer is the one I already have. So, are there good detectives among all those good mathematicians here?