On November the 27th of 2018 emeritus professor Viktor Vanberg of the University of Freiburg gave a lecture at the Research Unit Economic Law of the KU Leuven about the constitutional approach in economics. In his lecture he explained the rules-based approach defended by the Freiburg School of Ordoliberalism and the Viriginia School of Constitutional Economics. You can find the video of this lecture below.
Viktor Vanberg is an emeritus professor of the Albert-Ludwigs-Universität Freiburg and the chairman of the board of the Walter Eucken Institut. He finalized his studies of sociology at the University of Münster in 1968, his Ph.D. at the Technische Universität Berlin in 1974 and his habilitation at the Universität Mannheim in 1981. He was a professor of economics at the George Masson University where he worked with nobel price winning economist James M. Buchanan at the Center for the Study of Public Choice. When he returned to Germany he held the chair in economic policy at the Albert-Ludwigs-Universität Freiburg and became the director of the Walter Eucken Institut. In 2010 he and Hernando de Soto received the Hayek-Medaille. Professor Vanberg has several publications on the moral basis of the market order and competition, ordoliberalism, ordnungspolitik, the Freiburg school of law and economics, public choice, constitutional political economy, constitutional design, constitutional economics, the economic and monetary constitution, protectionism, competition among jurisdictions, federalism, democracy, sovereignty and the evolutionary approach to both law and economics.