CiltBrief of Amici Curiae Economists in Support of Petitioners, Bell Atlantic V. TwomblyWilliam J. Baumol, Michael J. Boskin, Robert W. Crandall, Kenneth G. Elzinga, David S. Evans, Gerald R. Faulhaber, Franklin M. Fisher, Luke M. Froeb, Richard Gilbert, Paul L. Joskow, Michael L. Katz, Paul R. Milgrom, Thomas G. Moore, Janusz A. Ordover, Robert H. Porter, Frederic M. Scherer, Richard Schmalensee, Marius Schwartz, David S. Sibley, Vernon L. Smith, Edward A. Snyder, A. Michael Spence, Pablo T. Spiller, Alan Sykes, David Teece, Michael D. Whinston