13. Putnam and Bayne, Hanging Together. For the authors'
views on more recent summits see Robert Putnam, "Western
Summitry in the 1990's: American Perspectives," The International
Spectator, No. 29 (April-June 1994), pp. 81-94, and Nicholas
Bayne, "The Course of Summitry," The World Today
(February 1992), pp. 27-30. For an analysis of sherpa evaluations
see John Kirton, "Contemporary Concert Diplomacy: The Seven
Power Summit and the Management of International Order,"
Paper prepared for the annual meeting of the International Studies
Association, London, England, April 1, 1989.