contributions by L. Neville Brown ... [et al.] ; ed. by Mauro Cappelletti ; with a foreword by Max Kohnstamm. -- Sijthoff, 1978. -- (Publications of the European University Institute = Publications de l'Institut Universitaire Européen = Publicaties van het Europees Universitaire Instituut = Pubblicazioni dell'Istituto Universitario Europeo = Det Europæiske Universitetsinstituts skrifter =Veröffentlichungen des Europäischen Hochschulinstituts ; 1).