Sik's Third Way of economic reproduction and institutional change, Kurt Dopfer. Part 1 The interdisciplinary view: changing priorities, Jan Tinbergen; limitations to the interdependence of systems, Gehard Schwarz; economics, environment, and the Faustian imperative, Hans-Christoph Binswanger et al; systems reproduction in interdisciplinary perspective, Leonhard Bauer and Herbert Matis; why some reforms succeed, Gerhard O.Mensch; a cognitive-evolutionary theory of economic policy, Alfred Meier and Susanne Haury. Part 2 The evolution of market systems: evolution and stagnation of economic systems, Ernst Heuss; the self-organization of the economy, Michael Hutter; evolution and innovation, Jochen Ropke; waves in the long-term economic development, Rene Holtschi and Christian Rockstroh; plan, market and banking, A.Kregel; the market and the classical theory of prices, Bertram Schefold; some thoughts on plan and market, Alex Nove; an institutionalist view of the evolution of economic systems, Marc R.Tool. Part 3 The evolution of planning systems: socialist experience and Ota Sik's third way, Jiri Kosta; socialism as a socio-economic system, Branko Horvat; on the reformability of the Soviet type economic systems, Leszek Balcerowicz; strategic reappraisal and short-term adjustment - the external economic policy of socialist countries at the crossroads, Andras Inotai; the technological gap in the CMEA countries - missing incentives, Friedrich Levcik; innovation as the crucial problem of perestroika, Harry Maier; Gorbachev's Radical Reform and the future of the Soviet planning system, Hans-Hermann Hohmann; success and failure - emergence of economic reforms in Czechoslovakia, Tamas Bauer; the state of the debate on planning in Hungary, Jan Adam; the evolution of socialist economic theories and the strategic options of reform in China, Wu Jing Lian; the evolution of economic systems - a summary, Karl-Friedrich Raible.