report of a CEPS Task Force, Februrary 2015 : chair: Javier Solana ; adviser: Jaap de Hoop Scheffer ; members: Vaira Vīķe-Freiberga, Hans-Peter Bartels, Jo Coelmont, Arnaud Danjean, Yves de Kermabon, Nicole Gnesotto, Daniel Gros, Eva Gross, François Heisbourg, Daniel Keohane, Roderich Kiesewetter, Karel Lannoo, Hilmar Linnenkamp, Uwe Optenhögel and Nick Witney
Brussels : Centre for European Policy Studies, [2015], © 2015