Notes:

Reprinted in Temporary Equilibrium Selected Readings, Jean- Michel Grandmont (ed.), Academic Press, Inc., San Diego, CA. (1988). Reprinted in New Keynesian Economics: Coordination Failures and Real Rigidities, N. Gregory Mankiw and David Romer (eds.), Vol. 1, MIT Press, Cambridge, MA (1991). Reprinted in Macroeconomics and Imperfect Competition, Jean-Pascal Bénassy (ed.), Edward Elgar Publishing Ltd., 1995.