Rather than subsuming the different groups of German neoliberals under one Freiburg School, we can follow Ptak who speaks of a confluence of three different strands of thought with a shared political will: first, the Freiburg School with Eucken, Böhm, and Miksch; second, the “sociological wing” of ordoliberalism with Rüstow and Röpke; and third, a group of practitioners consisting of Ludwig Erhard and the longstanding editor of the newspaper Frankfurter Allgemeine Zeitung, Erich Welter. Alfred Müller-Armack could be ascribed to the second and third strands of ordoliberalism.

Dieter Plehwe, Quinn Slobodian & Philip Mirowski (eds.), Nine Lives of Neoliberalism, loc. 629