In his JPE review of Die Konkurrenz Untersuchungen über die Ordnungsprinzipien und Entwicklungstendenzen der Kapitalistischen Verkehrswirtschaft by Georg Halm, Arthur R. Burns (1930, 490) states that Halm is a member of the "neo-liberal school of Professor Adolf Weber, of Munich". I would be grateful for references to earlier uses of the term.
RL