1. Bahro, R. 1977. Die alternative: zur Kritik des real existierenden Sozialismus. Cologne: Europäische Verlaganstalt.
2. Bettelheim, C. 1968. La transition vers l’économie socialiste. Paris: F. Maspero.
3. Brus, W. 1980. Political system and economic efficiency – The East European context. Journal of Comparative Economics 4 (1): 40–55.
4. Castoridis, C. 1979. Les carrefours du labyrinthe. Paris: Editions du Seuil. Trans. K. Soper and M.H. Ryle as Crossroads in the Labyrinth. Brighton: Harvester. 1984.
5. Feher, F., A. Heiler, and G. Markus. 1983. Dictatorship over needs. Oxford: Basil Blackwell.