TY - JOUR AU - Ball,Laurence AU - Romer,David TI - The Equilibrium and Optimal Timing of Price Changes JF - National Bureau of Economic Research Working Paper Series VL - No. 2432 PY - 1987 Y2 - November 1987 UR - http://www.nber.org/papers/w2432 N1 - Author contact info: Laurence M. Ball Department of Economics Johns Hopkins University Baltimore, MD 21218 Tel: 410/516-7605 Fax: 410/516-7600 E-Mail: lball@jhu.edu David H. Romer Department of Economics University of California, Berkeley Berkeley, CA 94720-3880 E-Mail: dromer@econ.berkeley.edu AB - This paper was an accidental re-issue of w2412 ER -