Competency Management in the Public Sector : European Variations on a Theme - Horton, S.; Hondeghem, A.; Farnham, D.; Farnham, David; Hondeghem, Annie; Horton, Sylvia; European Group of Public Administration; Instituut voor de Overheid; University of Portsmouth; Farnham, D.; Hondeghem, A. (Amsterdam IOS Press, 2002)